Games
Simulation games
Comet Barn has 2 simulation games out now: Billionaire Bay and Heirlines.
Simulation games hand you a system to run and let you live with the results. That system can be a harbor full of businesses or a single life, one year at a time.
The two kinds play at very different speeds. An idle tycoon keeps going while your phone is in your pocket, and you come back to spend what it earned. A life simulator waits for you. Nothing happens until you choose, and a choice made at twenty can still be shaping things at sixty.
Simulation games compared
| Game | Plays on | Price | Ads | Offline | Age |
|---|---|---|---|---|---|
| Billionaire Bay | Android | Free to play | Only by choice | Plays offline | 18+ |
| Heirlines | Android | Free to play | Only by choice | Plays offline | 17+ |
From each game's store listing and its own page. A dash means we haven't confirmed it yet.
Guides and news

Games like BitLife: 6 text life simulators on Android compared
Six games like BitLife on Google Play, compared: which let you play on as your child, which go beyond modern life, and how big each one is.
Idle tycoon games like AdVenture Capitalist, for Android
Idle tycoon games like AdVenture Capitalist on Google Play: the big names, what each adds to the formula, and which work offline.
Heirlines: what’s free and what the Heirloom adds
Compare free Heirlines with the optional Heirloom: eras, events, heirs, save slots, second chances and the choice of your starting family.
Questions about simulation games
- Which Comet Barn simulation games can I play on Android?
- Both: Billionaire Bay and Heirlines.
- Are Comet Barn simulation games free?
- Yes, both are free to play. In Billionaire Bay and Heirlines, an ad plays only when you choose to watch one for a reward. Billionaire Bay and Heirlines have optional in-app purchases.
- Which Comet Barn simulation games work offline?
- Both work without an internet connection.
- Do I need an account to play Comet Barn simulation games?
- No. None of them asks you to sign up or log in.
- What is an idle game?
- An idle game, also called an incremental game, keeps producing money or resources on its own, even while the game is closed. You come back to spend what built up on upgrades that make it produce faster, and in most of them you can later start over with a permanent bonus.
- What is a life simulator game?
- A life simulator follows one character from birth to old age and lets you make the choices along the way, such as school, work, money, love and family. Most are told in text, a year at a time.