Games like Magman
Games like Magman include Thank Goodness You're Here!, Laughing to Die, Hollow Knight, Sonic Superstars, and BEEP. We matched them by the tags players give Magman on Steam (Adventure, Casual, Platformer, 2D Platformer, and 2D): closest matches first, and among equally close ones the better-known games.

Thank Goodness You're Here!
Shared: Adventure · Casual · Comedy

Laughing to Die
Shared: Adventure · Casual · Platformer

Hollow Knight
Shared: Platformer · 2D · Adventure

Sonic Superstars
Shared: Platformer · Adventure · 2D Platformer

BEEP
Shared: Adventure · Platformer · 2D

Chained Together
Shared: Adventure · Platformer · Casual

Sonic Origins
Shared: Adventure · 2D Platformer · Platformer

GRIS
Shared: Adventure · Platformer · Hand-drawn

BattleBlock Theater®
Shared: Platformer · Comedy · 2D

Scribblenauts Unlimited
Shared: Casual · Adventure · 2D

Strange Jigsaws
Shared: Adventure · Casual · 2D

FEZ
Shared: Platformer · Adventure · Casual

SANABI
Shared: Adventure · 2D Platformer · 2D

Super Fancy Pants Adventure
Shared: Adventure · Platformer · Casual

Celeste
Shared: Platformer · 2D Platformer · Adventure

Pizza Tower
Shared: 2D Platformer · Platformer · 2D

Munin
Shared: Casual · Adventure · Platformer

Hollow Knight: Silksong
Shared: 2D · Platformer · Adventure

Getting Over It with Bennett Foddy
Shared: Platformer · Casual · Physics

Storyteller
Shared: Adventure · 2D · Hand-drawn

DuckTales: Remastered
Shared: Adventure · Platformer · Casual

Return to Monkey Island
Shared: Adventure · Comedy · 2D

Reventure
Shared: Adventure · Platformer · 2D

Gorogoa
Shared: Casual · Hand-drawn · Adventure