Spark
Idle game: grow an AI from a single spark
Original70 plays
Free idle games you can play in your browser
The most played idle games on Foundplay right now are Spark, Atom Clicker and Space Clicker – Free Space Clicker Game Online. All 29 here are free and play in your browser with no download, and 6 of them work on a phone.
29 games · Updated October 15, 2026 · Most played first
Idle games, also called incremental games, keep making progress while you wait. You start small, clicking or tapping for a resource, then spend it on upgrades that produce more of it for you. Numbers grow, new systems open up, and the game slowly turns from clicking into planning. Many keep counting while the tab is in the background, so you can check in now and then. They are easy to start, and the good ones keep surprising you with what the next upgrade unlocks.
Foundplay lists 29 idle games, every one an original game that its creator hosts on their own site, so Play takes you straight to them. After Spark, Atom Clicker and Space Clicker – Free Space Clicker Game Online, the most played are Diamond Idle, 8Compute: Build an AI Compute Empire and Lorvath. The newest ones are Influencia2 and Plaguebound. Of these 29, 6 work on a phone and 4 are marked as multiplayer. New games come out on Foundplay at 6 AM and 6 PM Pacific, and any that fit this tag join this page. The list below is sorted by plays and changes as people play.
Atom Clicker
Atom Clicker is a free incremental game. Click atoms, buy upgrades and generators, prestige through protons, electrons…
Original Phone-friendly Multiplayer31 plays
Space Clicker – Free Space Clicker Game Online
Play Space Clicker free online. Mine Stardust, automate production, manage Heat Flux, catch Golden Comets, and reset…
Original24 plays
Diamond Idle
Baseball idle: train, craft gear, climb to the bigs
Original22 plays
8Compute: Build an AI Compute Empire
Grow one GPU into an AI compute empire in this idle strategy game. Automate production and shape its future.
Original17 plays
Lorvath
Free browser idle MMORPG inspired by MU Online. Season 6 hard-55, PC/Android/iPhone, no install. discord.lorvath.com
Original Phone-friendly Multiplayer12 plays
Burn Heroes
Multiplayer idle bullet heaven
Original Phone-friendly Multiplayer12 plays
Cookie Clicker
Bake cookies and buy upgrades in this idle classic
Original11 plays
IDLE-CRAFT: The Curse
Idle survival RPG, permadeath
Original Keyboard10 plays
Clickwasher TD
Incremental clicker meets tower defense
Original Phone-friendly9 plays
Influencia2
Influencia2 is an idle game that parodies influencer life (with twitch connection)
Original Phone-friendly Multiplayer8 plays
Olympus Drift
Idle space game: roll a fleet and let it roam
Original8 plays
AI Lab: an idle game about training AI models
Click for compute, buy GPUs, and train AI models that earn until they go stale. Push complexity, but watch AI Safety.
Original Keyboard8 plays
Singularité
Idle game: feed a black hole, terraform worlds
Original7 plays
StarJam
Tower defense meets idle clicker
Original Keyboard5 plays
Bounce Pit
Idle ball pit: bouncing balls earn cash for upgrades
Original4 plays
The Great Paper Expansion
Idle game: fold paper up to the edge of the universe
Original Phone-friendly3 plays
El Coquero
Idle tycoon: run a coconut stand and grow it
Original2 plays
Plaguebound
Idle auto-battler where you rule as the Rat King
Original1 play
Popcorn Idle
Hover over kernels to pop corn and buy upgrades
Original1 play
Free Tree
Cozy incremental: chop trees, hire Blops, grow big
Original1 play
The Margot Collapse
Office incremental game with an eerie secret
Original1 play
Project Chromata
Mix colors in an idle game to relight a universe
Original1 play
Merge Potion: Idle Alchemy
Idle merge game: combine potions, sell for gold
Original1 play
Universal Paperclips
Idle game: turn paperclips into the universe
Original1 play
Diglings Demo
Dig deeper and upgrade in an early incremental demo
Original0 plays
Mawster
Feed a hungry chest in a dark dungeon idle game
Original0 plays
Yunyin Xiuxian
Chinese text idle game about cultivating immortality
Original0 plays
The Hollowing (demo)
Level a mountain in a 3D incremental game
Original0 plays
Questions
- What are the most popular idle games?
- By plays on Foundplay: Spark, Atom Clicker, Space Clicker – Free Space Clicker Game Online, Diamond Idle and 8Compute: Build an AI Compute Empire. The list on this page is sorted most played first.
- Which idle games work on phones?
- 6 of the 29 are marked as playable on a phone, including Atom Clicker, Lorvath and Burn Heroes. Each game's page says whether it works on a phone or needs a keyboard.
- Are these games free?
- Yes. Every game on Foundplay is free to play in a web browser, with nothing to download. Play opens the game on its creator's own site; some creators offer optional extras there.
- Do idle games keep running when I close the tab?
- Many save your progress in the browser and work out what you earned while you were away when you come back. Clearing your browser data can erase that save, so some let you export it.