Games like Sleep
Games like Sleep include Escape From Duckov, 12 is Better Than 6, HELLDIVERS™ 2, Halo: Spartan Assault, and Hotline Miami. We matched them by the tags players give Sleep on Steam (Top-Down Shooter, Action, PvE, Shooter, and 2D): closest matches first, and among equally close ones the better-known games.
Escape From Duckov
Shared: Action · Top-Down Shooter · Adventure
12 is Better Than 6
Shared: Action · Top-Down Shooter · Shooter
HELLDIVERS™ 2
Shared: PvE · Action · Shooter
Halo: Spartan Assault
Shared: Top-Down Shooter · Action · Shooter
Hotline Miami
Shared: Action · Top-Down · Indie
Grand Theft Auto V Legacy
Shared: Action · Shooter · Adventure
RUNNING WITH RIFLES
Shared: Top-Down Shooter · Action · Top-Down
Broforce
Shared: Action · 2D · Shooter
My Friend Pedro
Shared: Action · Shooter · Indie
The Ascent
Shared: Top-Down Shooter · Action · Shooter
Zombotron
Shared: Action · 2D · Shooter
BioShock Infinite
Shared: Action · Shooter · Singleplayer
South Park™: The Stick of Truth™
Shared: Comedy · Action · Adventure
Door Kickers
Shared: Action · Top-Down · 2D
American Fugitive
Shared: Action · Top-Down Shooter · Top-Down
Shadowgrounds
Shared: Top-Down Shooter · Action · Shooter
Hotline Miami 2: Wrong Number
Shared: Action · Top-Down · Top-Down Shooter
NOT A HERO
Shared: Action · Shooter · Comedy
The Last Stand: Aftermath
Shared: Top-Down Shooter · Shooter · Action
Warhammer 40,000: Space Marine 2
Shared: Action · PvE · Adventure
Intravenous 2
Shared: Shooter · Action · Top-Down Shooter
SYNTHETIK: Legion Rising
Shared: Top-Down Shooter · Action · Indie
Skul: The Hero Slayer
Shared: Action · 2D · Indie
Red Dead Redemption 2
Shared: Action · Adventure · Shooter