Choose Biohazard Protocol
Choose Biohazard Protocol if you want the Custom Volume Controls, Playable without Timed Input, and #category_playable_at_your_own_pace side of the pairing. Biohazard Protocol launched in 2026.
Biohazard Protocol vs Aer Isles
Biohazard Protocol and Aer Isles 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. Biohazard Protocol (2026) is 1 year older than Aer Isles (2027). 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 Aer Isles
Choose Aer Isles if you want the Keyboard Only Option and Save Anytime side of the pairing. Aer Isles launched in 2027.
Both Biohazard Protocol and Aer Isles sit in Action, Indie, and Adventure on Steam and both list Multi-player, Online Co-op, and LAN 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
 Biohazard Protocol |  Aer Isles | |
|---|---|---|
| Released | 2026 | 2027 |
| Genres | Action, Indie, Adventure | Action, Indie, Adventure |
| Platforms | Windows, macOS | Windows |
| Steam Deck | Unrated | Unrated |
| Price | Price unknown | Price unknown |
| Steam reviews | — | — |
| Multiplayer | Multi-player, Cross-Platform Multiplayer, Online Co-op | Multi-player, Online Co-op, LAN Co-op |
| Developers | jokerpony | Jonathan Dev |
Side by side
- Both share Action, Indie, Adventure on Steam.
- Biohazard Protocol (2026) is 1 year older than Aer Isles (2027).
- Both support cooperative play.
Biohazard Protocol vs Aer Isles — FAQ
- Should I play Biohazard Protocol or Aer Isles first?
- If you want chronology, Biohazard Protocol (2026) came out before Aer Isles (2027). 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 Biohazard Protocol and Aer Isles 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.
- Do both Biohazard Protocol and Aer Isles have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Biohazard Protocol ships Online Co-op, LAN Co-op; Aer Isles ships Online Co-op, LAN Co-op.