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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Breachway
Explore the galaxy in this deckbuilding, sci-fi roguelike where ship upgrades and crew management are key to your survival. Optimize resource generation, engage in intense turn-based battles, and take on ever-growing threats as you seek out The Signal.
Drill Core
Corporate greed meets strategic planet-mining in Drill Core! Drill to the heart of planets while managing workers, researching cutting-edge tech, and fortifying against alien attacks. Will you prioritize efficiency and risk your workers' safety, or focus on defense for survival?
Tower Factory
Tower Factory is a tower defense and automation game with roguelite elements. Optimize resource production using conveyor systems while defending against monster waves. Can you find and destroy the enemy tower before it's too late?
Space Run
Space Run is a «real-time spaceship construction strategy game». Space Run takes the well-known Tower Defense-style gameplay and twists it, challenging you to manage and protect a spaceship and its cargo against the hazards of deep space!
Space Pirates and Zombies
Explore a randomly generated Galaxy populated with factions, enemies, missions, and items providing you with a unique experience each time you play.
Toy Shire
Are you prepared for a thrilling toy army tower defense adventure? Welcome to the Toy Shire! Battle diverse foes in various locations, defend your family, and repel foes from your area. Save the world by strengthening your defense with toy towers!
Stellar Warfare
Space RTS with base building and ship customization. Personal passion project. More than 200 available ships, weapons and modules to design your fleet with. Contains a small campaign, several single and multiplayer game modes and a coop game mode. Also contains Wave defense!
Idle Hero TD - Tower Defense
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!
Imperium Galactica II
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.
Anomaly Defenders
Anomaly Defenders is the closing installment of the Anomaly series. The original incarnation of the Tower Offense sub-genre had players controlling humans fighting alien invaders. Now, the tables have turned. The human counterattack is underway and the alien homeworld is under threat.
Heat Signature
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.
Anomaly Warzone Earth Mobile Campaign
Anomaly Warzone Earth Mobile Campaign continues Steam's Anomaly Warzone Earth in an extra 15-level campaign. Originally released on mobile devices, the campaign is brought to Steam for PC, Mac and Linux exclusively in Anomaly Bundle. AWE Mobile Campaign turns tower defense on its head.
2112TD: Tower Defense Survival
Get ready for the ULTIMATE tower defense onslaught. Build, deploy, research and upgrade your defenses in this epic, old school RTS inspired sci-fi adventure.
Celestial Command
Mine asteroids, salvage space debris, design your own small or massive spacecraft using individual functional components, complete missions, and engage in battles against enemies in a vast galaxy with realistic physics based on orbital mechanics or in a classic physics mode.
Mashinky
Mashinky is a transport strategy game about trains. The goal is to create your own transport empire on a procedurally generated map. It’s a unique blend of realistic graphics combined with an isometric construction mode and board game-like rules.
Reassembly
A spaceship building and universe-exploration game. Collect resources, expand and grow your fleet, and conquer your personal galaxy. Stellar ambience by Peaks.
Space Run Galaxy
Space Run Galaxy is the sequel to Space Run, the game from one-man studio Passtech, which seduced hundreds of thousands of players with its dynamic and original gameplay. By twisting the tower-defense game style, Space Run offered an addictive real-time spaceship construction strategy experience.
EarthX
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!
The Classrooms
The Classrooms is a procedural, liminal-space, found-footage, survival horror game. Explore The Classrooms and discover the various anomalies it contains; from malicious entities, to harmless oddities. And remember, it's different every time you play, so your found footage is uniquely yours.
Infested Planet
Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy.
Anomaly Korea
Exclusively brought to Steam for PC, Mac and Linux in Anomaly Bundle, Anomaly Korea is an expansion campaign to Anomaly Warzone Earth. The alien robots are back and this time they’ve got Korea in their sights. It’s your job to lead a squad into fierce fire-fights and fend off the alien invasion.
Citywars Tower Defense
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.
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€
0.54€
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€
0.78€
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. Infested Planet
Similarity 44% Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy. Infested Planet is a strategy, tower defense and action game developed and published by Rocket Bear Games. Released on March 06th 2014 has received 2,957 reviews of which 2,767 were positive and 190 were negative resulting in a rating of 9.0 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.
9.0
2,767
190
-95%
12.49€
0.70€
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 900 reviews of which 853 were positive and 47 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
853
47
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