Choose SurvivalEXtreme
Choose SurvivalEXtreme if you want a Massively Multiplayer and RPG game with Multi-player, Shared/Split Screen, and Steam Leaderboards. On Steam, it has co-op, so you can bring a friend. SurvivalEXtreme launched in 2023.
SurvivalEXtreme vs Undefined 339
SurvivalEXtreme and Undefined 339 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. SurvivalEXtreme has co-op; Undefined 339 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 Undefined 339
Choose Undefined 339 if you want an Adventure game with Color Alternatives. On Steam, it's a focused single-player run rather than a multiplayer commitment.
Both SurvivalEXtreme and Undefined 339 sit in Action and Indie on Steam and both list HDR available, Subtitle Options, and Camera Comfort, 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
 SurvivalEXtreme |  Undefined 339 | |
|---|---|---|
| Released | 2023 | — |
| Genres | Action, Indie, Massively Multiplayer, RPG | Action, Indie, Adventure |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Unrated |
| Price | 34.99 USD | Price unknown |
| Steam reviews | 2 reviews | — |
| Multiplayer | Multi-player, Online Co-op, Shared/Split Screen Co-op | Single-player only |
| Developers | LegendaryLegion | Seydanoglu Production |
Side by side
- Both share Action, Indie on Steam.
- SurvivalEXtreme has co-op; Undefined 339 does not.
SurvivalEXtreme vs Undefined 339 — FAQ
- Are SurvivalEXtreme and Undefined 339 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.
- Does Undefined 339 have multiplayer like SurvivalEXtreme?
- No. SurvivalEXtreme supports multiplayer on Steam (Multi-player, Online Co-op, Shared/Split Screen Co-op), while Undefined 339 is listed as single-player only.