Games like Star Mountain
Games like Star Mountain include Brawlhalla, Street Fighter™ 6, Stick Fight: The Game, TEKKEN 7, and TEKKEN 8. We matched them by the tags players give Star Mountain on Steam (Arcade, Casual, Multiplayer, 2D Platformer, and Building): closest matches first, and among equally close ones the better-known games.

Brawlhalla
Shared: Multiplayer · Casual · 2D Platformer

Street Fighter™ 6
Shared: Arcade · Multiplayer · PvP

Stick Fight: The Game
Shared: Multiplayer · Local Multiplayer · PvP

TEKKEN 7
Shared: Multiplayer · Arcade · Local Multiplayer

TEKKEN 8
Shared: Multiplayer · Arcade · PvP

SpeedRunners
Shared: Multiplayer · Local Multiplayer · Platformer

Move or Die
Shared: Multiplayer · Local Multiplayer · Casual

BattleBlock Theater®
Shared: Multiplayer · Platformer · 2D

Ultimate Chicken Horse
Shared: Multiplayer · PvP · Platformer

Tricky Towers
Shared: Multiplayer · Casual · Building

Among Us
Shared: Multiplayer · 2D · Casual

Need for Speed™ Unbound
Shared: Multiplayer · Arcade · Casual

UpGun
Shared: Multiplayer · Casual · Arcade

Garry's Mod
Shared: Multiplayer · Casual · Building

Rivals of Aether
Shared: Multiplayer · Local Multiplayer · Platformer

Terraria
Shared: Multiplayer · 2D · Building

ROUNDS
Shared: Multiplayer · Local Multiplayer · PvP

DRAGON BALL FighterZ
Shared: Multiplayer · Arcade · Local Multiplayer

Sonic Superstars
Shared: Casual · 2D Platformer · Platformer

Timberman
Shared: Casual · Multiplayer · Arcade

GUILTY GEAR -STRIVE-
Shared: Arcade · PvP · Multiplayer

Duck Game
Shared: Multiplayer · Local Multiplayer · 2D

Broforce
Shared: Multiplayer · 2D · Platformer