Choose Arma 3
Choose Arma 3 if you want a Strategy game with LAN PvP, LAN Co-op, and Steam Timeline. 110,281 Steam reviews back the pick.
Arma 3 vs Grandis Adventures
Arma 3 and Grandis Adventures both land in Action, Simulation 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, Simulation on Steam. Both support cooperative play. Arma 3 is Deck Playable on Steam Deck; Grandis Adventures has no Deck rating yet. 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 Grandis Adventures
Choose Grandis Adventures if you want an Indie, Adventure, and RPG game with DualShock Controller Support, DualSense Controller Support, and Gamepad Recommended.
Both Arma 3 and Grandis Adventures sit in Action and Simulation on Steam and both list Multi-player, Steam Leaderboards, and Online 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
 Arma 3 |  Grandis Adventures | |
|---|---|---|
| Released | 2013 | — |
| Genres | Action, Strategy, Simulation | Action, Indie, Adventure, Simulation, RPG, Early Access |
| Platforms | Windows, macOS | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 29.99 USD | Price unknown |
| Steam reviews | 91.6% positive (110,281 reviews) | — |
| Multiplayer | Multi-player, Online Co-op, LAN Co-op | Multi-player, Online Co-op, Co-op |
| Developers | Bohemia Interactive | APOLLON COMPANY LIMITED |
Side by side
- Both share Action, Simulation on Steam.
- Both support cooperative play.
- Arma 3 is Deck Playable on Steam Deck; Grandis Adventures has no Deck rating yet.
Arma 3 vs Grandis Adventures — FAQ
- Are Arma 3 and Grandis Adventures similar?
- They overlap on Action, Simulation 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 Arma 3 and Grandis Adventures have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Arma 3 ships Online Co-op, LAN Co-op; Grandis Adventures ships Online Co-op, Co-op.
- Does Arma 3 run on Steam Deck?
- Yes — Arma 3 is rated Deck Playable by Valve. Grandis Adventures doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.