Choose Radioactivity
Choose Radioactivity if you want an Action experience. Radioactivity launched in 2026.
Radioactivity vs Backrooms: The Next Level
Radioactivity and Backrooms: The Next Level both land in Indie, Adventure, Early Access 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 Indie, Adventure, Early Access on Steam. Backrooms: The Next Level (2025) is 1 year older than Radioactivity (2026). 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 Backrooms: The Next Level
Choose Backrooms: The Next Level if you want a Simulation experience. Backrooms: The Next Level launched in 2025.
Both Radioactivity and Backrooms: The Next Level sit in Indie, Adventure, and Early Access on Steam and both list Multi-player, Online Co-op, and LAN 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
 Radioactivity |  Backrooms: The Next Level | |
|---|---|---|
| Released | 2026 | 2025 |
| Genres | Action, Indie, Adventure, Early Access | Indie, Adventure, Simulation, Early Access |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Unrated |
| Price | Price unknown | 1.99 USD |
| Steam reviews | — | 7 reviews |
| Multiplayer | Multi-player, Online Co-op, LAN Co-op | Multi-player, Online Co-op, LAN Co-op |
| Developers | Synthetic Mind Corp. | SUDT Games |
Side by side
- Both share Indie, Adventure, Early Access on Steam.
- Backrooms: The Next Level (2025) is 1 year older than Radioactivity (2026).
- Both support cooperative play.
Radioactivity vs Backrooms: The Next Level — FAQ
- Should I play Radioactivity or Backrooms: The Next Level first?
- If you want chronology, Backrooms: The Next Level (2025) came out before Radioactivity (2026). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
- Are Radioactivity and Backrooms: The Next Level similar?
- They overlap on Indie, Adventure, Early Access 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 Radioactivity and Backrooms: The Next Level have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Radioactivity ships Online Co-op, LAN Co-op; Backrooms: The Next Level ships Online Co-op, LAN Co-op.