Choose Sub-Species
Choose Sub-Species if you want the Multi-player, Shared/Split Screen, and Shared/Split Screen Co-op side of the pairing. On Steam, it has co-op, so you can bring a friend.
Sub-Species vs Blue Oath
Sub-Species and Blue Oath both land in Action, 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, Adventure on Steam. Blue Oath is free; Sub-Species is paid (Price unknown). Sub-Species has co-op; Blue Oath does not. 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 Blue Oath
Choose Blue Oath if you want an Indie, Free To Play, and Casual game with Color Alternatives and Stereo Sound. On Steam, it's free to play, so the barrier to trying it is zero. Blue Oath launched in 2026.
Both Sub-Species and Blue Oath sit in Action and Adventure on Steam and both list Custom Volume Controls, 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
 Sub-Species |  Blue Oath | |
|---|---|---|
| Released | — | 2026 |
| Genres | Action, Adventure | Action, Indie, Adventure, Free To Play, Casual |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Unrated |
| Price | Price unknown | Free to play |
| Steam reviews | — | 100% positive (18 reviews) |
| Multiplayer | Multi-player, Shared/Split Screen Co-op, Co-op | Single-player only |
| Developers | Howling Hamster Entertainment | SwordStack Studios |
Side by side
- Both share Action, Adventure on Steam.
- Blue Oath is free; Sub-Species is paid (Price unknown).
- Sub-Species has co-op; Blue Oath does not.
Sub-Species vs Blue Oath — FAQ
- Are Sub-Species and Blue Oath similar?
- They overlap on Action, 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 Blue Oath have multiplayer like Sub-Species?
- No. Sub-Species supports multiplayer on Steam (Multi-player, Shared/Split Screen Co-op, Co-op), while Blue Oath is listed as single-player only.
- Is Blue Oath free?
- Yes — Blue Oath is a free-to-play Steam title. Sub-Species is paid (Price unknown).