Games like Swamp Up
Games like Swamp Up include Geometry Dash, Celeste, Kao the Kangaroo: Round 2 (2003 re-release), Crash Bandicoot™ N. Sane Trilogy, and A Hat in Time. We matched them by the tags players give Swamp Up on Steam (Precision Platformer, 3D Platformer, Difficult, Family Friendly, and Platformer): closest matches first, and among equally close ones the better-known games.

Geometry Dash
Shared: Difficult · Precision Platformer · Platformer

Celeste
Shared: Precision Platformer · Difficult · Platformer

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

Crash Bandicoot™ N. Sane Trilogy
Shared: 3D Platformer · Difficult · Platformer

A Hat in Time
Shared: 3D Platformer · Cute · Platformer

Only Climb: Better Together
Shared: Precision Platformer · 3D Platformer · Difficult

Spyro™ Reignited Trilogy
Shared: 3D Platformer · Family Friendly · Platformer

Ratchet & Clank: Rift Apart
Shared: 3D Platformer · Family Friendly · Adventure

Get To Work
Shared: Difficult · Precision Platformer · 3D Platformer

Crash Bandicoot™ 4: It’s About Time
Shared: 3D Platformer · Difficult · Platformer

Super Meat Boy Forever
Shared: Difficult · Precision Platformer · Platformer

SpongeBob SquarePants: The Cosmic Shake
Shared: 3D Platformer · Family Friendly · Platformer

Hollow Knight
Shared: Difficult · Platformer · Atmospheric

Yooka-Laylee
Shared: 3D Platformer · Platformer · Family Friendly

Jump King
Shared: Precision Platformer · Difficult · Platformer

Pumpkin Jack
Shared: 3D Platformer · Colorful · Adventure

Pogostuck: Rage With Your Friends
Shared: Precision Platformer · Difficult · Platformer

Super Meat Boy
Shared: Precision Platformer · Difficult · Platformer

SpongeBob SquarePants: Battle for Bikini Bottom - Rehydrated
Shared: 3D Platformer · Family Friendly · Casual

Chained Together
Shared: Platformer · Casual · 3D Platformer

Slime Rancher
Shared: Cute · Colorful · Adventure

A Difficult Game About Climbing
Shared: Difficult · Precision Platformer · Platformer

Woodle Tree Adventures
Shared: 3D Platformer · Platformer · Family Friendly

Tinykin
Shared: 3D Platformer · Family Friendly · Cute