Choose ONAR - Off World Fighter
Choose ONAR - Off World Fighter if it matches what drew you to this matchup. ONAR - Off World Fighter launched in 2026.
ONAR - Off World Fighter vs Underground: World War
ONAR - Off World Fighter and Underground: World War 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. Underground: World War has co-op; ONAR - Off World Fighter does not. 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 Underground: World War
Choose Underground: World War if you want an Indie and Early Access game with Shared/Split Screen Co-op, HDR available, and Co-op. On Steam, it has co-op, so you can bring a friend. Underground: World War launched in 2026.
Both ONAR - Off World Fighter and Underground: World War 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
 ONAR - Off World Fighter |  Underground: World War | |
|---|---|---|
| Released | 2026 | 2026 |
| Genres | Action | Action, Indie, Early Access |
| Platforms | Windows | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 14.99 USD | Price unknown |
| Steam reviews | 3 reviews | — |
| Multiplayer | Multi-player | Multi-player, Shared/Split Screen Co-op, Co-op |
| Developers | Enter Yes Interactive | Underworld Interactive |
Side by side
- Both are Action games on Steam.
- Both released in 2026.
- Underground: World War has co-op; ONAR - Off World Fighter does not.
- ONAR - Off World Fighter is Deck Playable on Steam Deck; Underground: World War has no Deck rating yet.
ONAR - Off World Fighter vs Underground: World War — FAQ
- Are ONAR - Off World Fighter and Underground: World War 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.
- Does ONAR - Off World Fighter run on Steam Deck?
- Yes — ONAR - Off World Fighter is rated Deck Playable by Valve. Underground: World War doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.