Choose Grimoire of Monsters
Choose Grimoire of Monsters if you want the Online PvP, Online Co-op, and Playable without Timed Input side of the pairing.
Grimoire of Monsters vs Shadow Slayer
Grimoire of Monsters and Shadow Slayer both land in Action 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 are Action games 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 Shadow Slayer
Choose Shadow Slayer if you want an Indie, Casual, and Early Access game with Stereo Sound, Keyboard Only Option, and Mouse Only Option. Shadow Slayer launched in 2026.
Both Grimoire of Monsters and Shadow Slayer sit in Action on Steam and both list Multi-player, Shared/Split Screen, and Shared/Split Screen PvP, 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
 Grimoire of Monsters |  Shadow Slayer | |
|---|---|---|
| Released | — | 2026 |
| Genres | Action | Action, Indie, Casual, Early Access |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Unrated |
| Price | Price unknown | 5.00 USD |
| Steam reviews | — | — |
| Multiplayer | Multi-player, Online Co-op, Shared/Split Screen Co-op | Multi-player, Shared/Split Screen Co-op, Co-op |
| Developers | Vibe Labs Inc. | Solvaris |
Side by side
- Both are Action games on Steam.
- Both support cooperative play.
Grimoire of Monsters vs Shadow Slayer — FAQ
- Are Grimoire of Monsters and Shadow Slayer similar?
- They overlap on Action 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 Grimoire of Monsters and Shadow Slayer have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Grimoire of Monsters ships Online Co-op, Shared/Split Screen Co-op; Shadow Slayer ships Shared/Split Screen Co-op, Co-op.