Choose Terraria
Choose Terraria if you want a RPG game with Multi-player, Online PvP, and Online Co-op. On Steam, it's Steam Deck Verified, so handheld play works out of the box. 590,217 Steam reviews back the pick.
Terraria vs COSMONAUT
Terraria and COSMONAUT both land in Action, Indie, Adventure 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 Action, Indie, Adventure on Steam. Terraria (2011) is 7 years older than COSMONAUT (2018). Terraria scores higher on Steam reviews (97.6% positive) than COSMONAUT (84.6% positive). 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 COSMONAUT
Choose COSMONAUT if it's free to play, so the barrier to trying it is zero. COSMONAUT launched in 2018.
Both Terraria and COSMONAUT sit in Action, Indie, and Adventure on Steam, 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
 Terraria |  COSMONAUT | |
|---|---|---|
| Released | 2011 | 2018 |
| Genres | Action, Indie, Adventure, RPG | Action, Indie, Adventure |
| Platforms | Windows, macOS, Linux | Windows |
| Steam Deck | Deck Verified | Unrated |
| Price | 9.99 USD | Free to play |
| Steam reviews | 97.6% positive (590,217 reviews) | 84.6% positive (26 reviews) |
| Multiplayer | Multi-player, Online Co-op, Co-op | Single-player only |
| Developers | Re-Logic | Neon Chasm, LLC |
Side by side
- Both share Action, Indie, Adventure on Steam.
- Terraria (2011) is 7 years older than COSMONAUT (2018).
- Terraria scores higher on Steam reviews (97.6% positive) than COSMONAUT (84.6% positive).
- COSMONAUT is free; Terraria is paid (9.99 USD).
- Terraria has co-op; COSMONAUT does not.
- Terraria is Deck Verified on Steam Deck; COSMONAUT has no Deck rating yet.
Terraria vs COSMONAUT — FAQ
- Should I play Terraria or COSMONAUT first?
- If you want chronology, Terraria (2011) came out before COSMONAUT (2018). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
- Are Terraria and COSMONAUT similar?
- They overlap on Action, Indie, Adventure 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 COSMONAUT have multiplayer like Terraria?
- No. Terraria supports multiplayer on Steam (Multi-player, Online Co-op, Co-op), while COSMONAUT is listed as single-player only.
- Is COSMONAUT free?
- Yes — COSMONAUT is a free-to-play Steam title. Terraria is paid (9.99 USD).
- Does Terraria run on Steam Deck?
- Yes — Terraria is rated Deck Verified by Valve. COSMONAUT doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.