Games like Ponk's Jam: The Tulip Thief
Games like Ponk's Jam: The Tulip Thief include Pizza Tower, Celeste, SANABI, Geometry Dash, and Exit the Gungeon. We matched them by the tags players give Ponk's Jam: The Tulip Thief on Steam (Singleplayer, Difficult, Funny, 2D Platformer, and Cartoony): closest matches first, and among equally close ones the better-known games.

Pizza Tower
Shared: 2D Platformer · Funny · Cartoony

Celeste
Shared: Difficult · Singleplayer · 2D Platformer

SANABI
Shared: Singleplayer · 2D Platformer · Story Rich

Geometry Dash
Shared: Difficult · Singleplayer · Character Customization

Exit the Gungeon
Shared: Singleplayer · Adventure · Arcade

Getting Over It with Bennett Foddy
Shared: Difficult · Singleplayer · Funny

Psychonauts 2
Shared: Singleplayer · Story Rich · Funny

South Park™: The Stick of Truth™
Shared: Funny · Singleplayer · Adventure

DELTARUNE
Shared: Funny · Singleplayer · Story Rich

Hollow Knight: Silksong
Shared: Difficult · Singleplayer · Adventure

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

Undertale
Shared: Funny · Story Rich · Singleplayer

Hollow Knight
Shared: Difficult · Singleplayer · Adventure

Will You Snail?
Shared: Difficult · Funny · 2D Platformer

Portal 2
Shared: Singleplayer · Funny · Story Rich

Psychonauts
Shared: Singleplayer · Funny · Adventure

Tales from the Borderlands
Shared: Singleplayer · Adventure · Story Rich

Rogue Legacy 2
Shared: Arcade · Difficult · Singleplayer

Bully: Scholarship Edition
Shared: Singleplayer · Adventure · Funny

Call of Juarez: Gunslinger
Shared: Singleplayer · Story Rich · Adventure

Thank Goodness You're Here!
Shared: Funny · Adventure · 2D Platformer

Red Dead Redemption 2
Shared: Story Rich · Singleplayer · Adventure

Deponia
Shared: Singleplayer · Adventure · Funny

Crash Bandicoot™ N. Sane Trilogy
Shared: Difficult · Singleplayer · Adventure