Games like BuildArena
Games like BuildArena include Chained Together, Gang Beasts, Climber Animals: Together, Party Animals, and Garry's Mod. We matched them by the tags players give BuildArena on Steam (Action, Casual, Party Game, Platformer, and 3D Platformer): closest matches first, and among equally close ones the better-known games.

Chained Together
Shared: Casual · Platformer · Puzzle Platformer

Gang Beasts
Shared: Action · Casual · Party Game

Climber Animals: Together
Shared: Party Game · Casual · Platformer

Party Animals
Shared: Casual · Party Game · Action

Garry's Mod
Shared: Casual · Building · Funny

Portal 2
Shared: Platformer · Puzzle Platformer · 3D Platformer

Human Fall Flat
Shared: Action · Funny · Puzzle Platformer

PICO PARK
Shared: Casual · Puzzle Platformer · Platformer

MECCHA CHAMELEON
Shared: Casual · Party Game · Funny

Portal
Shared: Puzzle Platformer · 3D Platformer · Action

Carry The Glass
Shared: Puzzle Platformer · Platformer · Casual

Liars Bar
Shared: Casual · PvP · 3D

Move or Die
Shared: Action · Funny · Casual

s&box
Shared: Casual · Action · 3D Platformer

Ultimate Chicken Horse
Shared: Platformer · Party Game · Funny

Pummel Party
Shared: Party Game · Casual · Funny

Stick Fight: The Game
Shared: Action · Funny · Casual

Tricky Towers
Shared: Party Game · Casual · Building

Gorilla Tag
Shared: Action · 3D Platformer · 3D

ALTF4
Shared: Action · 3D Platformer · Casual

BattleBlock Theater®
Shared: Platformer · Funny · Action

Super Bunny Man
Shared: Platformer · Casual · Funny

Kao the Kangaroo: Round 2 (2003 re-release)
Shared: Action · Casual · 3D Platformer

Machine Party
Shared: Party Game · Casual · Funny