Are 4:LOOP and Quantum Covenant 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.

Do both 4:LOOP and Quantum Covenant have co-op?

Yes — both list a co-op category on Steam. Specifics differ: 4:LOOP ships Online Co-op, Co-op; Quantum Covenant ships Online Co-op, LAN Co-op.

4:LOOP vs Quantum Covenant

4:LOOP and Quantum Covenant 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 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 4:LOOP

Choose 4:LOOP if you want the DualSense Controller Support side of the pairing.

Choose Quantum Covenant

Choose Quantum Covenant if you want an Indie and Adventure game with LAN Co-op.

Both 4:LOOP and Quantum Covenant sit in Action on Steam and both list Multi-player, Online Co-op, and 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.

4:LOOP vs Quantum Covenant — Steam metadata comparison
	4:LOOP	Quantum Covenant
Released	—	—
Genres	Action	Action, Indie, Adventure
Platforms	Windows	Windows
Steam Deck	Unrated	Unrated
Price	Price unknown	Price unknown
Steam reviews	—	—
Multiplayer	Multi-player, Cross-Platform Multiplayer, Online Co-op	Multi-player, Online Co-op, LAN Co-op
Developers	Bad Robot Games LLC	Martyr Games Inc.

Side by side

Both are Action games on Steam.
Both support cooperative play.