IMHO.

Reggie, His Cousin, Two Scientists and Most Likely the End of the World vs Unless

Reggie, His Cousin, Two Scientists and Most Likely the End of the World and Unless both land in Indie, Adventure 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 on Steam. Unless (2025) is 1 year older than Reggie, His Cousin, Two Scientists and Most Likely the End of the World (2026). Unless is free; Reggie, His Cousin, Two Scientists and Most Likely the End of the World is paid (Price unknown). 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 Reggie, His Cousin, Two Scientists and Most Likely the End of the World

Choose Reggie, His Cousin, Two Scientists and Most Likely the End of the World if you want the Subtitle Options side of the pairing. Reggie, His Cousin, Two Scientists and Most Likely the End of the World launched in 2026.

Choose Unless

Choose Unless if you want an Action and Free To Play game with Steam Leaderboards, Stereo Sound, and Playable without Timed Input. On Steam, it's free to play, so the barrier to trying it is zero. Unless launched in 2025.

Both Reggie, His Cousin, Two Scientists and Most Likely the End of the World and Unless sit in Indie and Adventure on Steam and both list Multi-player, Shared/Split Screen, and Shared/Split Screen 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

Reggie, His Cousin, Two Scientists and Most Likely the End of the World vs Unless — Steam metadata comparison
Reggie, His Cousin, Two Scientists and Most Likely the End of the World — Steam game coverReggie, His Cousin, Two Scientists and Most Likely the End of the WorldUnless — Steam game coverUnless
Released20262025
GenresIndie, AdventureAction, Indie, Adventure, Free To Play
PlatformsWindows, macOS, LinuxWindows, macOS, Linux
Steam DeckUnratedDeck Playable
PricePrice unknownFree to play
Steam reviews—97.3% positive (75 reviews)
MultiplayerMulti-player, Shared/Split Screen Co-op, Co-opMulti-player, Shared/Split Screen Co-op, Co-op
DevelopersdegomaBellwood Studios

Side by side

Reggie, His Cousin, Two Scientists and Most Likely the End of the World vs Unless — FAQ

Should I play Reggie, His Cousin, Two Scientists and Most Likely the End of the World or Unless first?
If you want chronology, Unless (2025) came out before Reggie, His Cousin, Two Scientists and Most Likely the End of the World (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 Reggie, His Cousin, Two Scientists and Most Likely the End of the World and Unless similar?
They overlap on Indie, Adventure 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 Reggie, His Cousin, Two Scientists and Most Likely the End of the World and Unless have co-op?
Yes — both list a co-op category on Steam. Specifics differ: Reggie, His Cousin, Two Scientists and Most Likely the End of the World ships Shared/Split Screen Co-op, Co-op; Unless ships Shared/Split Screen Co-op, Co-op.
Is Unless free?
Yes — Unless is a free-to-play Steam title. Reggie, His Cousin, Two Scientists and Most Likely the End of the World is paid (Price unknown).
Reggie, His Cousin, Two Scientists and Most Likely the End of the World vs Unless · imho.run