Choose AI War 2
Choose AI War 2 if you want the Online Co-op, LAN Co-op, and Adjustable Text Size side of the pairing. On Steam, it has co-op, so you can bring a friend. AI War 2 launched in 2019.
AI War 2 vs Old Stars
AI War 2 and Old Stars both land in Strategy, Indie, Simulation 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 share Strategy, Indie, Simulation on Steam. AI War 2 has co-op; Old Stars does not. AI War 2 is Deck Playable on Steam Deck; Old Stars 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 Old Stars
Choose Old Stars if you want an Action and Early Access game with Online PvP and PvP.
Both AI War 2 and Old Stars sit in Strategy, Indie, and Simulation on Steam and both list Multi-player, 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
 AI War 2 |  Old Stars | |
|---|---|---|
| Released | 2019 | — |
| Genres | Strategy, Indie, Simulation | Action, Strategy, Indie, Simulation, Early Access |
| Platforms | Windows, macOS, Linux | Windows, macOS, Linux |
| Steam Deck | Deck Playable | Unrated |
| Price | 19.99 USD | Price unknown |
| Steam reviews | 89.2% positive (950 reviews) | — |
| Multiplayer | Multi-player, Cross-Platform Multiplayer, Online Co-op | Multi-player, Cross-Platform Multiplayer |
| Developers | Arcen Games | adamjr |
Side by side
- Both share Strategy, Indie, Simulation on Steam.
- AI War 2 has co-op; Old Stars does not.
- AI War 2 is Deck Playable on Steam Deck; Old Stars has no Deck rating yet.
AI War 2 vs Old Stars — FAQ
- Are AI War 2 and Old Stars similar?
- They overlap on Strategy, Indie, Simulation 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 AI War 2 run on Steam Deck?
- Yes — AI War 2 is rated Deck Playable by Valve. Old Stars doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.