Choose Undelve
Choose Undelve if you want an Indie and Early Access game with Steam Leaderboards, Surround Sound, and Playable without Timed Input. On Steam, it's a focused single-player run rather than a multiplayer commitment.
Undelve vs PHOSPHOR
Undelve and PHOSPHOR 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. PHOSPHOR has co-op; Undelve 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 PHOSPHOR
Choose PHOSPHOR if you want the Multi-player, Online PvP, and Online Co-op side of the pairing. On Steam, it has co-op, so you can bring a friend. PHOSPHOR launched in 2026.
Both Undelve and PHOSPHOR sit in Action on Steam and both list DualShock Controller Support, Color Alternatives, 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
 Undelve |  PHOSPHOR | |
|---|---|---|
| Released | — | 2026 |
| Genres | Action, Indie, Early Access | Action |
| Platforms | Windows, macOS | Windows |
| Steam Deck | Unrated | Unrated |
| Price | Price unknown | Price unknown |
| Steam reviews | — | — |
| Multiplayer | Single-player only | Multi-player, Online Co-op, Co-op |
| Developers | Surface Code Studio | Manawave |
Side by side
- Both are Action games on Steam.
- PHOSPHOR has co-op; Undelve does not.
Undelve vs PHOSPHOR — FAQ
- Are Undelve and PHOSPHOR 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 Undelve have multiplayer like PHOSPHOR?
- No. PHOSPHOR supports multiplayer on Steam (Multi-player, Online Co-op, Co-op), while Undelve is listed as single-player only.