Choose Starless Umbra
Choose Starless Umbra if you want an Indie game with Color Alternatives, Camera Comfort, and Adjustable Difficulty.
Starless Umbra vs Mystic Seals
Starless Umbra and Mystic Seals both land in Action, Adventure, 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 Action, Adventure, RPG on Steam. 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 Mystic Seals
Choose Mystic Seals if you want the Steam Input API Support side of the pairing.
Both Starless Umbra and Mystic Seals sit in Action, Adventure, and RPG 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
 Starless Umbra |  Mystic Seals | |
|---|---|---|
| Released | — | — |
| Genres | Action, Indie, Adventure, RPG | Action, Adventure, RPG |
| Platforms | Windows | Windows, Linux |
| Steam Deck | Unrated | Unrated |
| Price | Price unknown | Price unknown |
| Steam reviews | — | — |
| Multiplayer | Multi-player, Shared/Split Screen Co-op, Co-op | Multi-player, Shared/Split Screen Co-op, Co-op |
| Developers | Alcuria Games | Jean-André Santoni |
Side by side
- Both share Action, Adventure, RPG on Steam.
- Both support cooperative play.
Starless Umbra vs Mystic Seals — FAQ
- Are Starless Umbra and Mystic Seals similar?
- They overlap on Action, Adventure, RPG 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 Starless Umbra and Mystic Seals have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Starless Umbra ships Shared/Split Screen Co-op, Co-op; Mystic Seals ships Shared/Split Screen Co-op, Co-op.