Games like Parkour Posse
Games like Parkour Posse include Brawlhalla, Thomas Was Alone, BattleBlock Theater®, Momodora: Reverie Under The Moonlight, and Webbed. We matched them by the tags players give Parkour Posse on Steam (Side Scroller, 2D Platformer, Runner, Parkour, and Platformer): closest matches first, and among equally close ones the better-known games.

Brawlhalla
Shared: 2D Platformer · Platformer · Casual

Thomas Was Alone
Shared: Side Scroller · 2D Platformer · Platformer

BattleBlock Theater®
Shared: Platformer · 2D · 2D Platformer

Momodora: Reverie Under The Moonlight
Shared: 2D Platformer · Side Scroller · 2D

Webbed
Shared: 2D Platformer · Cute · 2D

Pizza Tower
Shared: 2D Platformer · Platformer · Cartoony

Anomaly Agent
Shared: Side Scroller · 2D Platformer · Platformer

Cuphead
Shared: Platformer · 2D · Co-op

Bread & Fred
Shared: 2D Platformer · Cute · Platformer

Montaro
Shared: Cute · Runner · Casual

Spelunky 2
Shared: 2D Platformer · Platformer · 2D

Turbo Pug
Shared: Side Scroller · 2D · Runner

pureya
Shared: Side Scroller · 2D · Casual

Super Meat Boy
Shared: 2D Platformer · Platformer · 2D

CRAYON SHINCHAN The Storm Called! FLAMING KASUKABE RUNNER!!
Shared: Side Scroller · Runner · 2D Platformer

Broforce
Shared: 2D · Platformer · Side Scroller

20XX
Shared: 2D Platformer · Platformer · 2D

Oozi: Earth Adventure
Shared: 2D Platformer · Platformer · Side Scroller

Sonic Mania
Shared: Platformer · 2D · Side Scroller

Trine 2: Complete Story
Shared: 2D Platformer · Platformer · Side Scroller

Twin Shot Deluxe
Shared: 2D Platformer · Platformer · Cute

Celeste
Shared: 2D Platformer · Platformer · 2D

Soda Crisis
Shared: Side Scroller · Runner · Platformer

KarmaZoo
Shared: 2D Platformer · Platformer · 2D