Games like Astronomics on Steam
For those who prefer not to search, lists of the most played, top deals and best free games like Astronomics are available at the bottom of the page.
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Gunjitsu
Gunjitsu is a fast-paced platform shooter with grappling hooks, rocket launchers, guns and grenades! Kill your opponents or race them for the fastest time. Inspirations from old platform shooters gives Gunjitsu a classic feel while modern tech takes it to a new level of frantic action!
NEBULOUS: Fleet Command
Take command of your hand-tailored fleet of space warships and use realistic radar, electronic warfare, advanced movement controls in 3D space, and precision targeting to outmaneuver and outwit your opponents in a simulation-heavy tactical space game like no other.
Planets Under Attack
Play as humans or robots in a brand new sci-fi strategy adventure! Travel into the far reaches of space, through cleverly designed star constellations and variable game modes, conquering enemy planets using 15 combinable technologies.
Gratuitous Space Battles
Who needs backstory? Who needs resource-gathering? Diplomacy is so last year. Gratuitous Space Battles cuts right to the chase of sci-fi strategy games, and deals with large, completely unjustified space battles between huge opposing space fleets.
Touhou Mystery Reel
Touhou Mystery Reel is a 2D platformer action game with special combat system. You can experience exciting battles and interesting stories in the game. There will be different endings of the stages. The player has the freedom to choose either to fight the powerful bosses or to take "shortcuts".
GOLD EXPRESS
New AI character "Punch" is available now! Welcome to the Project "Gold Express"! It is a cyberpunk style asymmetric multiplayer game in which you can get new survival experience with your teammates with various abilities in the strategic maps.
Unstoppable Gorg
Defend the solar system from fearsome aliens by sending satellites into orbit in revolutionary tower defense action!
Toy Soldiers
Command your TOY SOLDIERS in epic, action-packed battles.
Atom Zombie Smasher
The zombie apocalypse is upon us and it's up to you to evacuate everyone before they fall prey to the undead. Conduct massive rescue operations with a helping hand from snipers, artillery crews, orbital bombardments, and more.
Bloons Adventure Time TD
Defend Ooo from the Bloon invasion in this epic tower defense crossover.
Kunitsu-Gami: Path of the Goddess
A new tale of the Kami awaits... Kunitsu-Gami: Path of the Goddess is a unique Japanese-inspired, single player Kagura Action Strategy game.
SlipSlop: World's Hardest Platformer Game
One button platformer nightmare
shapez 2
Dive into a factory-building game with the focus on just that – building huge space factories! Construct sprawling multi-level factories and satisfying production lines without limits. Tackle increasingly complex automation challenges at your own pace – you won’t have to worry about enemies.
Buzz Aldrin's Space Program Manager
Space Program Manager (SPM) is the ultimate game of space exploration. It is the mid 1950s and the race for dominance between the US and the Soviet Union is about to move into a new dimension: space.
Ascension
In this cultivation 4X strategy game, your sect has been in peril, and so they open a portal—sending you, a young disciple and their last hope, inside. Stand tall as the new sect leader and guide disciples to rebuild what was lost. Sharpen your focus, master alchemy, and ascend to immortality.
Cows VS Vikings
You think you’ve seen everything in Stream already?! No, buddy, you never saw anything like that before! The Vikings against the cows! Show them the strength of Odin and twist their horns off!
GemCraft - Chasing Shadows
An epic, challenging tower defense game with an emphasis on strategy and replayability. Summon gems of immense magical potency and harness their unique abilities against a seemingly endless horde of monsters. The archdemon seeks to swallow the world, and you must journey to stand against her.
DG2: Defense Grid 2
Setting the bar as the definitive tower defense game, Defense Grid 2 introduces new worlds and threats to test your tower placement strategies. With a bold new look and the addition of new game modes, player-versus-player and multiplayer co-op, every play brings fun new opportunities and challenges.
SPORE™ Galactic Adventures
Take Your Creature From Zero To Galactic HeroGet out of your starship and turn your Spore creatures into legendary Space Captains. For the first time, beam down with your allies to take on action-packed, planetside adventures. Complete quests, collect rewards, and even create your own missions.
Stellaris
Explore a galaxy full of wonders in this sci-fi grand strategy game from Paradox Development Studios. Interact with diverse alien races, discover strange new worlds with unexpected events and expand the reach of your empire. Each new adventure holds almost limitless possibilities.
Anomaly 2
Anomaly 2 is a sequel to the critically acclaimed Anomaly Warzone Earth. Maintaining the core elements of the original, Anomaly 2 adds plenty of new features: unit morphing, over million tactical combinations, post-apo world and tower defense vs tower offense multiplayer mode.
Age of Steel: Recharge
"Age of Steel: Recharge" is a 2D strategy with a view from the side. You're taking the role of commander, who was entrusted the management of the military base. Your mission is to defend a base from the waves of enemies at any price.
Bastide
(Early Access game in alpha.) Bastide is a city-building strategy based in the 13th century where you must guide your village of peasants to thrive and survive against other villages, bandits, hunger, disease, and the cold so that they may grow into a fortified town.
Mud and Blood
Mud and Blood, the cult classic flash real time strategy game, returns with its signature take on infantry tactics. Command a small squad through brutal battles against unfair odds. This is combat. Experience the chaos and unceremonious violence of modern war, where every decision counts.
Most played games like Astronomics on Steam
Take a look at the top games like Astronomics that are currently attracting the largest player bases on the Steam platform, as of June 15th 2025.
1. Stellaris
Similarity 40% Explore a galaxy full of wonders in this sci-fi grand strategy game from Paradox Development Studios. Interact with diverse alien races, discover strange new worlds with unexpected events and expand the reach of your empire. Each new adventure holds almost limitless possibilities. Stellaris is a space, grand strategy and strategy game developed by Paradox Development Studio and published by Paradox Interactive. Released on May 09th 2016 has received 185,433 reviews of which 159,527 were positive and 25,906 were negative resulting in a rating of 8.5 out of 10. The game has hit the top spot as the #1 most played game like Astronomics, thanks to its 15,712 peak concurrent players over the last day.
8.5
159,527
25,906
15,712
players
2. shapez 2
Similarity 41% Dive into a factory-building game with the focus on just that – building huge space factories! Construct sprawling multi-level factories and satisfying production lines without limits. Tackle increasingly complex automation challenges at your own pace – you won’t have to worry about enemies. shapez 2 is a management, strategy and automation game developed by tobspr Games and published by tobspr Games and Gamirror Games. Released on August 15th 2024 has received 11,061 reviews of which 10,856 were positive and 205 were negative resulting in an impressive rating of 9.5 out of 10. While seeing 1,872 players online at once in the last 24 hours, this game is currently ranked #2 among games like Astronomics based on player count.
9.5
10,856
205
1,872
players
3. Idle Hero TD - Tower Defense
Similarity 47% Endless idle tower defense game full of deep strategy and combat mechanics. Unlock and upgrade dozens of epic fantasy heroes to defeat an infinite swarm of enemy monsters. Strategize hero positions, synergies, and skills for an effective defense, then sit back and let the auto-battler do its thing! Idle Hero TD - Tower Defense is a early access, strategy and tower defense game developed and published by Swell Games LLC. Released on May 03rd 2024 has received 665 reviews of which 548 were positive and 117 were negative resulting in a rating of 7.8 out of 10. While seeing 1,067 players online at once in the last 24 hours, this game is currently ranked #3 among games like Astronomics based on player count.
7.8
548
117
1,067
players
4. Stardeus
Similarity 48% Stardeus is a deep colony sim set on a broken starship manned by drones and hibernating human survivors. As the AI, have your drones repair your ship, save your crew and travel the stars in this beautiful simulation. Stardeus is a early access, exploration and colony sim game developed by Kodo Linija and published by Paradox Arc. Released on October 12th 2022 has received 1,343 reviews of which 1,179 were positive and 164 were negative resulting in a rating of 8.4 out of 10. With 375 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Astronomics.
8.4
1,179
164
375
players
5. Nordhold
Similarity 40% Enemies are coming! Every decision matters: build your city, grow the economy, and prepare for enemy waves. Strengthen your defenses, adapt your strategy, and unleash your hero’s full potential. This unique Tower Defense will test your skills – are you worthy to claim a place at Valhalla? Nordhold is a rogue-lite, tower defense and city builder game developed by StunForge and published by StunForge and HypeTrain Digital. Released on March 25th 2025 has received 2,140 reviews of which 1,924 were positive and 216 were negative resulting in a rating of 8.6 out of 10. With 330 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Astronomics.
8.6
1,924
216
330
players
6. Emberward
Similarity 44% Build twisting mazes with tetromino blocks and deploy unique towers in this engaging roguelite tower defense game! Emberward is a early access, tower defense and strategy game developed and published by Refic Games. Released on June 25th 2024 has received 2,685 reviews of which 2,609 were positive and 76 were negative resulting in an impressive rating of 9.3 out of 10. With 242 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Astronomics.
9.3
2,609
76
242
players
7. NEBULOUS: Fleet Command
Similarity 42% Take command of your hand-tailored fleet of space warships and use realistic radar, electronic warfare, advanced movement controls in 3D space, and precision targeting to outmaneuver and outwit your opponents in a simulation-heavy tactical space game like no other. NEBULOUS: Fleet Command is a strategy, space and simulation game developed by Eridanus Industries and published by Hooded Horse. Released on February 11th 2022 has received 3,536 reviews of which 2,915 were positive and 621 were negative resulting in a rating of 8.0 out of 10. With 216 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Astronomics.
8.0
2,915
621
216
players
8. Necrosmith 2
Similarity 44% Like a dead man reanimated by dark sorcery, the necromancer simulator is back! Give the undead the ability to fly over mountains and swim across rivers, explore a fully generated world at night and fend off enemy hordes during the day. Start a new, uhm, life. Necrosmith 2 is a tower defense, strategy and rogue-lite game developed and published by Alawar. Released on March 27th 2024 has received 1,191 reviews of which 932 were positive and 259 were negative resulting in a rating of 7.5 out of 10. With 198 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Astronomics.
7.5
932
259
198
players
9. The Crust
Similarity 45% Automate a lunar base as you become the savior of humanity exploring the future on the moon. Mine, craft, research, and trade resources with Earth in this gripping narrative basebuilder. The Crust is a early access, base-building and space game developed by VEOM Studio and published by Crytivo. Released on July 15th 2024 has received 2,603 reviews of which 2,003 were positive and 600 were negative resulting in a rating of 7.4 out of 10. With 176 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Astronomics.
7.4
2,003
600
176
players
10. SPORE™ Galactic Adventures
Similarity 41% Take Your Creature From Zero To Galactic HeroGet out of your starship and turn your Spore creatures into legendary Space Captains. For the first time, beam down with your allies to take on action-packed, planetside adventures. Complete quests, collect rewards, and even create your own missions. SPORE™ Galactic Adventures is a simulation, action and space game developed by EA - Maxis and published by Electronic Arts. Released on June 23rd 2009 has received 7,230 reviews of which 6,439 were positive and 791 were negative resulting in a rating of 8.6 out of 10. With 165 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Astronomics.
8.6
6,439
791
165
players
Best deals on games like Astronomics on Steam
Discover fantastic savings with the best discounts on a variety of games like Astronomics available on Steam right now, updated on June 15th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like Astronomics.
1. EarthX
Similarity 45% EarthX is a rocket company management game. Go from launching small rockets on Earth to eventually building a colony on Mars. Create your own Internet constellation, develop new technologies, supply the International Space Station and terraform Mars! EarthX is a simulation, indie and strategy game developed by Denis and Ry and published by Mesote Games. Released on July 12th 2023 has received 875 reviews of which 769 were positive and 106 were negative resulting in a rating of 8.3 out of 10. Featuring a massive 99% discount, this game currently holds the #1 spot in the best deals for games like Astronomics.
8.3
769
106
-99%
19.99€
0.29€
2. DG2: Defense Grid 2
Similarity 41% Setting the bar as the definitive tower defense game, Defense Grid 2 introduces new worlds and threats to test your tower placement strategies. With a bold new look and the addition of new game modes, player-versus-player and multiplayer co-op, every play brings fun new opportunities and challenges. DG2: Defense Grid 2 is a strategy, tower defense and indie game developed by Hidden Path Entertainment and published by Hidden Path Entertainment and 505 Games. Released on September 23rd 2014 has received 3,163 reviews of which 2,723 were positive and 440 were negative resulting in a rating of 8.3 out of 10. Thanks to its incredible 98% discount, this game is now the #2 best deal in games like Astronomics.
8.3
2,723
440
-98%
12.49€
0.26€
3. Shortest Trip to Earth
Similarity 40% Shortest Trip to Earth is a roguelike spaceship simulator focused on exploration, ship management and tactical battles. Embark on a perilous journey across the universe with nuclear missiles, armed crew and a cat. Shortest Trip to Earth is a rogue-lite, space and strategy game developed and published by Interactive Fate. Released on August 15th 2019 has received 1,390 reviews of which 1,072 were positive and 318 were negative resulting in a rating of 7.4 out of 10. Thanks to its incredible 98% discount, this game is now the #3 best deal in games like Astronomics.
7.4
1,072
318
-98%
25.13€
0.53€
4. Buzz Aldrin's Space Program Manager
Similarity 41% Space Program Manager (SPM) is the ultimate game of space exploration. It is the mid 1950s and the race for dominance between the US and the Soviet Union is about to move into a new dimension: space. Buzz Aldrin's Space Program Manager is a simulation, strategy and space game developed by Polar Motion and published by Slitherine Ltd.. Released on October 31st 2014 has received 479 reviews of which 369 were positive and 110 were negative resulting in a rating of 7.3 out of 10. Currently offered at a significant 98% discount, this title has earned the #4 position in the best deals for games like Astronomics.
7.3
369
110
-98%
28.99€
0.77€
5. Planets Under Attack
Similarity 42% Play as humans or robots in a brand new sci-fi strategy adventure! Travel into the far reaches of space, through cleverly designed star constellations and variable game modes, conquering enemy planets using 15 combinable technologies. Planets Under Attack is a strategy, indie and space game developed by Targem Games and published by TopWare Interactive. Released on September 27th 2012 has received 1,119 reviews of which 808 were positive and 311 were negative resulting in a rating of 7.0 out of 10. Currently offered at a significant 98% discount, this title has earned the #5 position in the best deals for games like Astronomics.
7.0
808
311
-98%
11.79€
0.26€
6. GemCraft - Chasing Shadows
Similarity 41% An epic, challenging tower defense game with an emphasis on strategy and replayability. Summon gems of immense magical potency and harness their unique abilities against a seemingly endless horde of monsters. The archdemon seeks to swallow the world, and you must journey to stand against her. GemCraft - Chasing Shadows is a tower defense, strategy and indie game developed by Game in a Bottle and published by Armor Games Studios. Released on April 30th 2015 has received 4,136 reviews of which 3,939 were positive and 197 were negative resulting in an impressive rating of 9.2 out of 10. Currently offered at a significant 97% discount, this title has earned the #6 position in the best deals for games like Astronomics.
9.2
3,939
197
-97%
9.75€
0.36€
7. Between the Stars
Similarity 42% Become the Captain of an interstellar cruiser and journey across the galaxy to save the Republic. During your journey you will have to make important decisions, improve the weaponry of your ship and fight against numerous enemies. Between the Stars is a space, rpg and action game developed and published by Isolated Games. Released on March 07th 2024 has received 2,301 reviews of which 1,724 were positive and 577 were negative resulting in a rating of 7.3 out of 10. Currently offered at a significant 97% discount, this title has earned the #7 position in the best deals for games like Astronomics.
7.3
1,724
577
-97%
28.99€
0.89€
8. Heat Signature
Similarity 47% Heat Signature is a game from the developers of Gunpoint where you break into spaceships, make terrible mistakes, and think of clever ways out of them. You take a mission, fly to the target ship, sneak inside, and make clever use of your gadgets to distract, ambush and take out the crew. Heat Signature is a space, stealth and indie game developed and published by Suspicious Developments. Released on September 21st 2017 has received 7,146 reviews of which 6,756 were positive and 390 were negative resulting in an impressive rating of 9.2 out of 10. Currently offered at a significant 96% discount, this title has earned the #8 position in the best deals for games like Astronomics.
9.2
6,756
390
-96%
12.99€
0.60€
9. Imperium Galactica II
Similarity 47% Reintroducing a classic from the golden era of gaming, the original empire building space RTS, Imperium Galactica 2 is back and looking better than ever with new high-res textures and vivid colors. Imperium Galactica II is a strategy, space and 4x game developed by Digital Reality and Gyroscope Games and published by THQ Nordic. Released on January 19th 2017 has received 591 reviews of which 515 were positive and 76 were negative resulting in a rating of 8.2 out of 10. Currently offered at a significant 96% discount, this title has earned the #9 position in the best deals for games like Astronomics.
8.2
515
76
-96%
9.99€
0.45€
10. Necrosmith 2
Similarity 44% Like a dead man reanimated by dark sorcery, the necromancer simulator is back! Give the undead the ability to fly over mountains and swim across rivers, explore a fully generated world at night and fend off enemy hordes during the day. Start a new, uhm, life. Necrosmith 2 is a tower defense, strategy and rogue-lite game developed and published by Alawar. Released on March 27th 2024 has received 1,191 reviews of which 932 were positive and 259 were negative resulting in a rating of 7.5 out of 10. Currently offered at a significant 95% discount, this title has earned the #10 position in the best deals for games like Astronomics.
7.5
932
259
-95%
7.79€
0.42€
Free games like Astronomics on Steam
Check out this fantastic list of free-to-play games like Astronomics you can enjoy on Steam right now, updated on June 15th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play games like Astronomics.
1. Idle Hero TD - Tower Defense
Similarity 47% Endless idle tower defense game full of deep strategy and combat mechanics. Unlock and upgrade dozens of epic fantasy heroes to defeat an infinite swarm of enemy monsters. Strategize hero positions, synergies, and skills for an effective defense, then sit back and let the auto-battler do its thing! Idle Hero TD - Tower Defense is a early access, strategy and tower defense game developed and published by Swell Games LLC. Released on May 03rd 2024 has received 665 reviews of which 548 were positive and 117 were negative resulting in a rating of 7.8 out of 10. With 1,067 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Astronomics.
7.8
548
117
1,067
players
2. Bloons Adventure Time TD
Similarity 41% Defend Ooo from the Bloon invasion in this epic tower defense crossover. Bloons Adventure Time TD is a strategy, action and tower defense game developed and published by Ninja Kiwi. Released on January 16th 2019 has received 4,302 reviews of which 3,743 were positive and 559 were negative resulting in a rating of 8.4 out of 10. The game currently holds the #2 spot among the most played free games like Astronomics.
8.4
3,743
559
80
players
3. Citywars Tower Defense
Similarity 44% Citywars TD is a cute multiplayer third person Survival Tower Defense. Build towers, gather resources, craft tools, upgrade weapons, level up buildings, expand your city with your friends and work under pressure before the next incoming wave of monsters. Citywars Tower Defense is a early access, strategy and tower defense game developed and published by 01 Studio. Released on March 03rd 2022 has received 1,104 reviews of which 893 were positive and 211 were negative resulting in a rating of 7.7 out of 10. The game currently holds the #3 spot among the most played free games like Astronomics.
7.7
893
211
8
players
4. Touhou Big Big Battle
Similarity 40% just a touhou rts game Touhou Big Big Battle is a early access, strategy and indie game developed and published by MyACG Studio. Released on September 10th 2018 has received 4,012 reviews of which 3,220 were positive and 792 were negative resulting in a rating of 7.8 out of 10. The game currently holds the #4 spot among the most played free games like Astronomics.
7.8
3,220
792
1
players
5. Touhou Mystery Reel
Similarity 42% Touhou Mystery Reel is a 2D platformer action game with special combat system. You can experience exciting battles and interesting stories in the game. There will be different endings of the stages. The player has the freedom to choose either to fight the powerful bosses or to take "shortcuts". Touhou Mystery Reel is a early access, casual and adventure game developed and published by Iceprite. Released on February 13th 2022 has received 902 reviews of which 854 were positive and 48 were negative resulting in a rating of 8.9 out of 10. The game currently holds the #5 spot among the most played free games like Astronomics.
8.9
854
48
6. SlipSlop: World's Hardest Platformer Game
Similarity 41% One button platformer nightmare SlipSlop: World's Hardest Platformer Game is a free to play, action and strategy game developed and published by 10F. Released on June 28th 2019 has received 1,696 reviews of which 1,398 were positive and 298 were negative resulting in a rating of 7.9 out of 10. The game currently holds the #6 spot among the most played free games like Astronomics.
7.9
1,398
298