Choose Line Defense
Choose Line Defense if you want an Indie and Casual game with Camera Comfort and Save Anytime. Line Defense launched in 2025.
Line Defense vs Proto Trigger
Line Defense and Proto Trigger 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. Line Defense (2025) is 1 year older than Proto Trigger (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 Proto Trigger
Choose Proto Trigger if you want the Online Co-op, LAN Co-op, and Color Alternatives side of the pairing. Proto Trigger launched in 2026.
Both Line Defense and Proto Trigger sit in Action 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
 Line Defense |  Proto Trigger | |
|---|---|---|
| Released | 2025 | 2026 |
| Genres | Action, Indie, Casual | Action |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Unrated |
| Price | 4.99 USD | Price unknown |
| Steam reviews | 4 reviews | — |
| Multiplayer | Multi-player, Shared/Split Screen Co-op, Co-op | Multi-player, Online Co-op, Shared/Split Screen Co-op |
| Developers | thesecondbaron | Busted Atlas |
Side by side
- Both are Action games on Steam.
- Line Defense (2025) is 1 year older than Proto Trigger (2026).
- Both support cooperative play.
Line Defense vs Proto Trigger — FAQ
- Should I play Line Defense or Proto Trigger first?
- If you want chronology, Line Defense (2025) came out before Proto Trigger (2026). 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 Line Defense and Proto Trigger 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 Line Defense and Proto Trigger have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Line Defense ships Shared/Split Screen Co-op, Co-op; Proto Trigger ships Online Co-op, Shared/Split Screen Co-op.