Games like Death Game
Games like Death Game include Human Fall Flat, BattleBlock Theater®, Portal, Portal 2, and Broforce. We matched them by the tags players give Death Game on Steam (Arcade, Action, Comedy, Platformer, and 2D): closest matches first, and among equally close ones the better-known games.

Human Fall Flat
Shared: Funny · Puzzle · Action

BattleBlock Theater®
Shared: Platformer · Comedy · Funny

Portal
Shared: Puzzle · Comedy · Action

Portal 2
Shared: Platformer · Puzzle · Funny

Broforce
Shared: Action · 2D · Platformer

Pizza Tower
Shared: Platformer · Funny · Comedy

Goat Simulator
Shared: Comedy · Funny · Action

Shower With Your Dad Simulator 2015: Do You Still Shower With Your Dad
Shared: Arcade · 2D · Funny

Defy Gravity Extended
Shared: Platformer · Action · 2D

Pikuniku
Shared: Puzzle · Action · Funny

There Is No Game: Wrong Dimension
Shared: Puzzle · Comedy · Funny

Gunpoint
Shared: 2D · Comedy · Puzzle

BEEP
Shared: Platformer · 2D · Action

Thank Goodness You're Here!
Shared: Comedy · Funny · 2D

LIMBO
Shared: Platformer · Puzzle · 2D

Rogue Legacy 2
Shared: Arcade · Action · Platformer

Webbed
Shared: 2D · Platformer · Physics

Duck Game
Shared: Action · Funny · 2D

Shovel Knight: Treasure Trove
Shared: Platformer · Action · 2D

Octodad: Dadliest Catch
Shared: Comedy · Funny · Physics

Gang Beasts
Shared: Action · Funny · Physics

The Elephant Collection
Shared: Arcade · Platformer · Action

People Playground
Shared: 2D · Physics · Funny

Garry's Mod
Shared: Funny · Physics · Comedy