New on Google Play
Compound Idle The compound-interest idle investing game
One cent in a savings account. Ten eras later, the market is yours.
Compound Idle is a free idle game (incremental game) for Android by ObsessionGames, an independent game studio from Germany. You start with a single cent and grow it into a financial empire, powered by compound interest: every return is reinvested, so your wealth grows exponentially. On top of that come a living stock market with bull runs, bear markets and crashes, optional trading sessions and a prestige system spanning ten eras of financial history.
Screenshots
What Compound Idle looks like on your phone.
Screenshots show the German version; the game is fully available in English.
How Compound Idle works
The core is simple – the depth arrives with every era.
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Invest
Buy assets, from a savings account to stocks. Each one produces income per second – offline too.
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Reinvest
Profits flow into new levels and asset classes. Compound interest speeds up everything.
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Read the market
Bull runs, bear markets and legendary crashes change daily which asset is worth it.
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Cash out
Reset your run, earn reputation (+1 % income per point) and climb into the next era.
Features
Relaxed idle growth meets a living market economy.
Market Live
New market weather every day: bull runs lift everything, bear markets gnaw at your returns, legendary crashes pulverise entire portfolios.
Trading Floor
Tap-and-hold scalping sets your income multiplier. In swing mode you trade stocks, hold sectors and collect dividends. All optional.
Bank
Compound and leverage your capital: lock in fixed-term deposits, expand the vault, draw on a credit line.
Cash-out & prestige
Burn it down, bank your reputation, come back faster with permanent bonuses – with 50 strategies and reputation upgrades.
Cash counter
Your money-counting machine decides how much of your production you actually collect. Upgrade it so nothing goes to waste.
Missions & challenges
Missions, 17 trophies and a new weekend challenge from 20 scenarios – from recession to hyperinflation.
Broker drone
Your broker's drone flies by and drops boosts at your feet.
Piggy bank
A piggy bank that fills up over time and wants to be cracked open.
Offline earnings
Close the app, live your life, come back and stare: your wealth keeps growing – calculated fairly, with no penalty for taking a break.
12 asset classes
Each asset class unlocks in a specific era and plays differently.
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Savings account
from era 1
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Bonds
from era 1
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Stocks
from era 2
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ETFs
from era 2
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Real estate
from era 3
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Commodities
from era 3
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Private equity
from era 4
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Forex
from era 5
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Cryptocurrencies
from era 6
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Derivatives
from era 7
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Algo trading
from era 8
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Synthetic assets
from era 9
10 eras of financial history
From saver to finance titan: every era brings its own artwork, new asset classes and a permanent income bonus.
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Era 1
First Savings
Saver
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Era 2
First Portfolio
Retail Investor
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Era 3
Active Markets
Trader
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Era 4
Fund Era
Fund Manager
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Era 5
Globalization
Wealth Manager
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Era 6
Crypto Revolution
Crypto Whale
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Era 7
Leverage Era
Derivatives Pro
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Era 8
Quant Era
Quant
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Era 9
AI Markets
Hedge Fund Titan
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Era 10
Market Dominance
Finance Titan
Played fair, promised
What you can expect from Compound Idle – and what you can't.
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Free to play
The whole game is free to play, all ten eras included.
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No forced ads
Ads only appear as bonus videos you start yourself – or never, if you prefer. No ad wall in the middle of your run.
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No account
No sign-up, no login. Your save stays on your device.
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Plays offline
Compound Idle runs without an internet connection. Only bonus videos and purchases need one.
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Optional purchases
If you want, you can buy gold packs, the permanent Auto-Investor or the piggy bank. You never have to.
Fact sheet
- Name
- Compound Idle
- Developer
- ObsessionGames, independent game studio from Germany
- Genre
- Idle / incremental, economic simulation, tycoon
- Platform
- Android (Google Play) · iOS coming soon
- Price
- Free, optional in-app purchases
- Ads
- Opt-in bonus videos only
- Languages
- English, German, French, Spanish, Turkish
- Account
- Not required
- Internet
- Not required
- Version
- 1.0.0 · released September 2026
About ObsessionGames
ObsessionGames is an independent game studio from Germany. We make mobile games you want to keep playing: with real depth, fair monetisation without forced ads and plenty of attention to detail. Compound Idle is our first game.
Compound Idle FAQ
What is Compound Idle?
Compound Idle is an idle investing game about compound interest and the stock market for Android. You invest virtual money in 12 asset classes – from a savings account to synthetic assets –, reinvest the returns and rise over ten eras from saver to finance titan. It is developed by the independent studio ObsessionGames.
Is Compound Idle free?
Yes. Compound Idle is free on Google Play and can be played through without paying anything. Optional in-app purchases are available (gold packs, Auto-Investor, piggy bank).
Does Compound Idle have ads?
Only if you want them: ads appear exclusively as bonus videos that you start yourself to earn a reward. There are no forced ads and no interruptions.
Is Compound Idle available on iPhone and iPad?
The iOS version is in the works and will be released on the Apple App Store. Right now Compound Idle is available for Android phones and tablets on Google Play.
Can I play Compound Idle offline?
Yes. The game runs without an internet connection, and your wealth keeps growing while the app is closed (offline earnings). You only need internet for optional bonus videos and purchases.
Do I need an account?
No. There is no sign-up and no login. Your save is stored on your device. Details are in the app's privacy policy.
Can you earn real money with Compound Idle?
No. All money in the game is virtual. There are no payouts, no stakes and no real financial products.
Is Compound Idle financial advice or a stock market simulator?
No, Compound Idle is a game. Terms like compound interest, ETFs or dividends are real and playfully brought to life; prices, markets and companies (parodies) are made up. The game is not investment advice.
Who is Compound Idle for?
For anyone who enjoys idle, clicker and tycoon games like AdVenture Capitalist or Cookie Clicker and wants more depth: prestige across ten eras, living markets and optional trading. It works for short sessions just as well as for leaving it running in the background.
How does the cash-out work?
Cash-out is the prestige system: you reset capital, assets and strategies and get reputation in return. Every reputation point permanently raises your income by 1 %, and with enough capital you advance to the next era.
Which languages does Compound Idle support?
English, German, French, Spanish and Turkish. On first launch the game follows your device language; you can change it in the settings.
Who makes Compound Idle?
ObsessionGames, an independent game studio from Germany. Questions, feedback and bug reports are welcome at info@obsessiongames.de.
Ready to become a finance titan?
One cent. Ten eras. A fortune that keeps growing while you sleep.
Compound Idle is a game, not financial advice. Any company or brand parodies are there purely for entertainment. Google Play and the Google Play logo are trademarks of Google LLC.