Choose Proto Trigger
Choose Proto Trigger if you want the Color Alternatives side of the pairing. Proto Trigger launched in 2026.
Proto Trigger vs Hollow Ground
Proto Trigger and Hollow Ground 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 released in 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 Hollow Ground
Choose Hollow Ground if you want the Camera Comfort, Stereo Sound, and Keyboard Only Option side of the pairing. Hollow Ground launched in 2026.
Both Proto Trigger and Hollow Ground sit in Action on Steam and both list Multi-player, Shared/Split Screen, and Online 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
 Proto Trigger |  Hollow Ground | |
|---|---|---|
| Released | 2026 | 2026 |
| Genres | Action | Action |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Unrated |
| Price | Price unknown | Price unknown |
| Steam reviews | — | — |
| Multiplayer | Multi-player, Online Co-op, Shared/Split Screen Co-op | Multi-player, Online Co-op, Shared/Split Screen Co-op |
| Developers | Busted Atlas | Ledendal Games |
Side by side
- Both are Action games on Steam.
- Both released in 2026.
- Both support cooperative play.
Proto Trigger vs Hollow Ground — FAQ
- Are Proto Trigger and Hollow Ground 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 Proto Trigger and Hollow Ground have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Proto Trigger ships Online Co-op, Shared/Split Screen Co-op; Hollow Ground ships Online Co-op, Shared/Split Screen Co-op.