Games like Underworld Idle on Steam
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Castle Clicker : Idle City Tycoon
Castle Clicker is a more strategy focused clicking game that required you to think about how to manage your resources and build your city. If you're looking for a more in depth but still casual clicking game, this is for you!
Guild Quest
You’ve just bought yourself a new island and it’s time to fill it up with QUESTS! Collect guildians, upgrade their guildhalls, and unleash them onto your own custom quest lines.
Zombidle : REMONSTERED
Like the song says, good guys finish last, and in this case, they also finish homeless and on fire. Welcome to Zombidle, Berzerk Studio's newest idle game, or tap game; whatever, you do you, man.
Idle Research
Idle Research is an addictive, resource management, incremental game with both idle and active playstyles. Research and craft colorful Flasks and Tubes to earn as much Energy as possible! Big numbers guaranteed.
Grow Defense
Upgrade your Castle and Unlock new tiers of Skills and Weapons to Defend vs Monsters and Bosses across VARIOUS ZONES! Find Rare ITEMS dropped from monsters and bosses and upgrade them to their full potential! Defeat RAID Mega-Bosses to find LEGENDARY items!
Incremental Cubes
Cube based incremental game that is simple but very deep!
Space Warlord Organ Trading Simulator
Buy, sell, and trade organs in a strange and evolving universe. Dive into the quivering innards of alien capitalism in the sci-fi body horror market tycoon game you didn't know you needed.
SPACE / MECH / PILOT
The S/M/P Initiative is not responsible for any odd abnormalities while playing. Connections to other universes are not monitored or controlled by the video game program. Keep away from children under the age of 6. Fun to play but not to eat.
Idle Champions of the Forgotten Realms
Idle Champions of the Forgotten Realms is a Dungeons & Dragons strategy management game uniting Champions from throughout the D&D multiverse into a grand adventure.
Firestone – Idle Clicker Online RPG
Chill out, your heroes got this! They’ll fight even when you’re offline. Pop back in for satisfying numbers going up, sweet rewards and easy level-ups. Unlock cool gear, & smack down epic bosses. Play idle or clicker - you’ll power up with no stress, just good times and infinite progression!
Revolution Idle
Revolution Idle is a free idle incremental game with offline progress, prestige layers, and endless automation. Start simple, reach infinity and go further.
MergeCrafter
Welcome to the magical world of Runaria! Explore dungeons, craft tools, chop trees, mine rocks, and discover treasure! Merge identical items to create valuable resources, Craft new tools and upgrade them with powerful enchantments! Setup passive mining drills and tree farms to rebuild your camp!
Split or Steal
Have you ever wanted to devote your time and energy to amassing a small fortune, and then place total trust in a complete stranger to not steal it all away from you?
PegIdle
PegIdle is a Pachinko idle game! Aim and shoot your balls to clear all the pegs on the board. Recieve gold by hitting the golden pegs or by landing balls into the moving bucket. Purchasing auto ball drop will automaticly drop balls onto the board. Spend your gold on new balls and ball upgrades!
Insanity Clicker
Been looking for the thrill? Then you've come to the right place! Insanity Clicker is a time-killer game full of horror and fear that will make you tremble in a couple of minutes!
Epic Clicker Journey
Experience your epic journey. Discover 20 mysterious lands and face the monsters living out there. Show that you are persistent traveler and held your adventure, even in the toughest conditions.
Soda Dungeon 2
Everyone’s favorite laid-back dungeon crawler returns in Soda Dungeon 2. Featuring a new adventure, a whole town to upgrade, crafting, new classes, alternate dimensions, and more! It’s everything you loved about the original plus all the stuff you’ve been asking for.
Idle Big Devil
Idle Big Devil is a free idle RPG game with 3D graphics. If you are interested in strategy or idle games, you might want to take a look!
Cheeky Chooks
Build a Cheeky Chooks HENPIRE! Collect a tonne of unique ultra rare chooks, build and customise your farm from a Chook Shed to a CHOOKTOPIA!
Coin Flipper
Heads or tails? Coin Flipper is an idle clicker game that is all about flipping lots of coins. Upgrade your coin flips and get even more coins to flip!
God Awe-full Clicker
God Awe-Full Clicker is an Endless Dungeon Clicker/Idle game full of Greek Mythology and Epic Battles with RPG style aspects.
Croakoloco
Croakoloco is a relaxing frog collecting idle game. Watch them jump, croak, and eat delicious flies. Grow frogs, feed frogs, or take control of one in “Froggy Mode” for a more active play style!
Chicken Farm 2K17
Chicken Farm is a management game with clicker aspects, where you buy chickens, catch the eggs, work at the market, sell your chickens and ultimately profit.
Aperture Desk Job
Introducing Aperture Desk Job — a free playable short made for the Steam Deck, set in the universe of the modestly popular Portal games.
Apple Clicker!
How do you like them apples? Because we have them all! Have time in the game or click the apple to get your favorite apple.
Kiwi Clicker - Juiced Up
Deliver more and more kiwis to satiate the kings' hunger - sacrifice their pulp and transcend beyond your fruital form!
Cookie Clicker
An idle game about making cookies! Originally released in 2013 on the web, and actively developed since then. This is the official version for Steam.
Time Clickers
Time Clickers is what's called an 'incremental game'. There's always a fun upgrade to look forward to, and the numbers keep getting bigger! Hire a team to fight for you, even when you're offline!
Your Chronicle
"Let's begin your own story." This is a text-based idle RPG game. There are already more than 3,000 unique story actions and it's still growing.
Achievement Idler: Red
Achievement Idler:Red is an Achievement spam "game" that you start up to idle in the background and get the achievements.
Achievement Idler: Black
Achievement Idler: Black is an Achievement spam "game" that you start up to idle in the background and get the achievements.
Sigils of Elohim
Sigils of Elohim is a free mini-game prelude to Croteam’s upcoming first-person puzzler The Talos Principle that challenges players to solve dozens of challenging sigil puzzles under the watchful eye of Elohim.