Ostranauts and Starship Simulator both land in Simulation, RPG 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 Simulation, RPG on Steam. Starship Simulator is free; Ostranauts is paid (15.99 USD). Starship Simulator has co-op; Ostranauts does not. No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.
Choose Ostranauts if you want an Indie and Early Access game with Color Alternatives, Custom Volume Controls, and Playable without Timed Input. On Steam, it's Steam Deck Verified, so handheld play works out of the box. 2,106 Steam reviews back the pick.
Choose Starship Simulator if you want an Adventure, Free To Play, and Casual game with Multi-player, Online Co-op, and Co-op. On Steam, it's free to play, so the barrier to trying it is zero.
Both Ostranauts and Starship Simulator sit in Simulation and RPG on Steam and both list Camera Comfort, 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.
 Ostranauts |  Starship Simulator | |
|---|---|---|
| Released | 2020 | — |
| Genres | Indie, Simulation, RPG, Early Access | Adventure, Simulation, RPG, Free To Play, Casual |
| Platforms | Windows | Windows |
| Steam Deck | Deck Verified | Unrated |
| Price | 15.99 USD | Free to play |
| Steam reviews | 79.9% positive (2,106 reviews) | — |
| Multiplayer | Single-player only | Multi-player, Online Co-op, Co-op |
| Developers | Blue Bottle Games | Fleetyard Studios |
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