Games like Ourself
Games like Ourself include PEAK, Chained Together, RV There Yet?, R.E.P.O., and Human Fall Flat. We matched them by the tags players give Ourself on Steam (Online Co-Op, Physics, 3D Platformer, Funny, and Intentionally Awkward Controls): closest matches first, and among equally close ones the better-known games.

PEAK
Shared: Online Co-Op · Co-op · Physics

Chained Together
Shared: Co-op · Online Co-Op · Funny

RV There Yet?
Shared: Co-op · Online Co-Op · Funny

R.E.P.O.
Shared: Online Co-Op · Co-op · Physics

Human Fall Flat
Shared: Co-op · Funny · Physics

Biped
Shared: Online Co-Op · Co-op · Funny

Super Battle Golf
Shared: Online Co-Op · Co-op · Physics

Garry's Mod
Shared: Physics · Funny · Multiplayer

Content Warning
Shared: Online Co-Op · Physics · Co-op

It Takes Two
Shared: Co-op · Online Co-Op · Multiplayer

BattleBlock Theater®
Shared: Co-op · Funny · Online Co-Op

Carry The Glass
Shared: Co-op · Online Co-Op · Funny

How to Fish
Shared: Online Co-Op · Co-op · Physics

Gang Beasts
Shared: Co-op · Funny · Physics

Overcooked! 2
Shared: Online Co-Op · Co-op · Funny

Super Bunny Man
Shared: Co-op · Online Co-Op · Funny

Magicka
Shared: Co-op · Online Co-Op · Comedy

Who's Your Daddy?!
Shared: Funny · Online Co-Op · Co-op

HELLDIVERS™ 2
Shared: Online Co-Op · Co-op · Multiplayer

Castle Crashers®
Shared: Online Co-Op · Co-op · Funny

Split Fiction
Shared: Co-op · Online Co-Op · 3D Platformer

Gamble With Your Friends
Shared: Online Co-Op · Co-op · Physics

Climber Animals: Together
Shared: Physics · 3D Platformer · Co-op

Don't Starve Together
Shared: Co-op · Online Co-Op · Multiplayer