Choose They Are Billions
Choose They Are Billions if it matches what drew you to this matchup. 18,746 Steam reviews back the pick.
They Are Billions vs Mega Prison
They Are Billions and Mega Prison both land in Strategy on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both are Strategy games on Steam. They Are Billions is Deck Playable on Steam Deck; Mega Prison has no Deck rating yet. No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.
Which should you pick?
Choose Mega Prison
Choose Mega Prison if it matches what drew you to this matchup.
Both They Are Billions and Mega Prison sit in Strategy on Steam and both list Steam Leaderboards, so either pick lands in the same broad neighborhood. Use the side-by-side table for the feature view, or follow the "Games like" links below to see ranked alternatives for either title.
Side-by-side comparison
 They Are Billions |  Mega Prison | |
|---|---|---|
| Released | 2019 | — |
| Genres | Strategy | Strategy |
| Platforms | Windows | Windows, macOS |
| Steam Deck | Deck Playable | Unrated |
| Price | 29.99 USD | Price unknown |
| Steam reviews | 80.2% positive (18,746 reviews) | — |
| Multiplayer | Single-player only | Single-player only |
| Developers | Numantian Games | Chute Apps |
Side by side
- Both are Strategy games on Steam.
- They Are Billions is Deck Playable on Steam Deck; Mega Prison has no Deck rating yet.
They Are Billions vs Mega Prison — FAQ
- Are They Are Billions and Mega Prison similar?
- They overlap on Strategy on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.
- Does They Are Billions run on Steam Deck?
- Yes — They Are Billions is rated Deck Playable by Valve. Mega Prison doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.