Choose Cosmic Tails
Choose Cosmic Tails if you want a RPG game with Gamepad Recommended, Camera Comfort, and Adjustable Difficulty. Cosmic Tails launched in 2025.
Cosmic Tails vs Underwater DuO
Cosmic Tails and Underwater DuO both land in Action, Indie, Casual 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, Casual on Steam. Cosmic Tails (2025) is 1 year older than Underwater DuO (2026). Both support cooperative play. 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 Underwater DuO
Choose Underwater DuO if you want the Steam Leaderboards side of the pairing. Underwater DuO launched in 2026.
Both Cosmic Tails and Underwater DuO sit in Action, Indie, and Casual on Steam and both list Multi-player, Shared/Split Screen, and Shared/Split Screen Co-op, 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
 Cosmic Tails |  Underwater DuO | |
|---|---|---|
| Released | 2025 | 2026 |
| Genres | Action, Indie, RPG, Casual | Action, Indie, Casual |
| Platforms | Windows, macOS, Linux | Windows |
| Steam Deck | Unrated | Unrated |
| Price | 1.24 USD | Price unknown |
| Steam reviews | 2 reviews | — |
| Multiplayer | Multi-player, Shared/Split Screen Co-op, Co-op | Multi-player, Shared/Split Screen Co-op, Co-op |
| Developers | parm | Woodpecker |
Side by side
- Both share Action, Indie, Casual on Steam.
- Cosmic Tails (2025) is 1 year older than Underwater DuO (2026).
- Both support cooperative play.
Cosmic Tails vs Underwater DuO — FAQ
- Should I play Cosmic Tails or Underwater DuO first?
- If you want chronology, Cosmic Tails (2025) came out before Underwater DuO (2026). 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 Cosmic Tails and Underwater DuO similar?
- They overlap on Action, Indie, Casual 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.
- Do both Cosmic Tails and Underwater DuO have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Cosmic Tails ships Shared/Split Screen Co-op, Co-op; Underwater DuO ships Shared/Split Screen Co-op, Co-op.