Games like Slap City
Games like Slap City include Stick Fight: The Game, Rivals of Aether, Brawlhalla, Rivals of Aether II, and Duck Game. We matched them by the tags players give Slap City on Steam (Indie, Action, Fighting, 2.5D, and Platformer): closest matches first, and among equally close ones the better-known games.

Stick Fight: The Game
Shared: Fighting · Action · Multiplayer

Rivals of Aether
Shared: Fighting · Indie · 2D Fighter

Brawlhalla
Shared: Fighting · Multiplayer · 2D Fighter

Rivals of Aether II
Shared: Fighting · Indie · Action

Duck Game
Shared: Action · Multiplayer · Funny

ROUNDS
Shared: Fighting · Multiplayer · Action

Move or Die
Shared: Action · Multiplayer · Indie

Gang Beasts
Shared: Action · Multiplayer · Funny

GUILTY GEAR -STRIVE-
Shared: Fighting · 2D Fighter · 2.5D

Mortal Kombat 11
Shared: Fighting · Action · Multiplayer

Lethal League Blaze
Shared: Indie · Action · Fighting

Mortal Kombat X
Shared: Fighting · Action · Multiplayer

Lethal League
Shared: Indie · Fighting · Action

SpeedRunners
Shared: Indie · Multiplayer · Action

TowerFall Ascension
Shared: Indie · Action · 2D Fighter

Broforce
Shared: Action · Indie · Platformer

GUILTY GEAR Xrd REV 2
Shared: Fighting · Action · 2D Fighter

Party Animals
Shared: Multiplayer · Fighting · Action

DRAGON BALL FighterZ
Shared: Fighting · Action · Multiplayer

Bopl Battle
Shared: Action · Multiplayer · 2D Fighter

ULTIMATE MARVEL VS. CAPCOM 3
Shared: Fighting · Action · 2D Fighter

TEKKEN 7
Shared: Action · Fighting · Multiplayer

Stick It to the Stickman
Shared: Action · Multiplayer · Indie

Clone Drone in the Danger Zone
Shared: Action · Fighting · Indie