Choose Trigonarium
Choose Trigonarium if you want the Steam Leaderboards side of the pairing. Trigonarium launched in 2015.
Trigonarium vs Sleeper Agent
Trigonarium and Sleeper Agent both land in Action, Indie 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, Indie on Steam. Sleeper Agent is free; Trigonarium is paid (0.49 USD). 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 Sleeper Agent
Choose Sleeper Agent if you want an Adventure, Free To Play, and Casual game with Shared/Split Screen PvP and PvP. On Steam, it's free to play, so the barrier to trying it is zero.
Both Trigonarium and Sleeper Agent sit in Action and Indie 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
 Trigonarium |  Sleeper Agent | |
|---|---|---|
| Released | 2015 | — |
| Genres | Action, Indie | Action, Indie, Adventure, Free To Play, Casual |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Unrated |
| Price | 0.49 USD | Free to play |
| Steam reviews | 93.9% positive (49 reviews) | — |
| Multiplayer | Multi-player, Shared/Split Screen Co-op, Co-op | Multi-player, Shared/Split Screen Co-op, Co-op |
| Developers | Kimmo Lahtinen | POWERBOMB |
Side by side
- Both share Action, Indie on Steam.
- Sleeper Agent is free; Trigonarium is paid (0.49 USD).
- Both support cooperative play.
Trigonarium vs Sleeper Agent — FAQ
- Are Trigonarium and Sleeper Agent similar?
- They overlap on Action, Indie 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 Trigonarium and Sleeper Agent have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Trigonarium ships Shared/Split Screen Co-op, Co-op; Sleeper Agent ships Shared/Split Screen Co-op, Co-op.
- Is Sleeper Agent free?
- Yes — Sleeper Agent is a free-to-play Steam title. Trigonarium is paid (0.49 USD).