Games like Moxie's Lemon
Games like Moxie's Lemon include Momodora: Reverie Under The Moonlight, The Pedestrian, Portal 2, Celeste, and Knock-knock. We matched them by the tags players give Moxie's Lemon on Steam (Side Scroller, 2D Platformer, Puzzle, Rhythm, and Sailing): closest matches first, and among equally close ones the better-known games.

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

The Pedestrian
Shared: Puzzle · Side Scroller · 2D Platformer

Portal 2
Shared: Puzzle · Platformer · Female Protagonist

Celeste
Shared: 2D Platformer · Platformer · Female Protagonist

Knock-knock
Shared: Side Scroller · 2D Platformer · Puzzle

Planet of Lana
Shared: 2D Platformer · Puzzle · Female Protagonist

Neva
Shared: Platformer · Puzzle · 2D Platformer

LIMBO
Shared: Puzzle · Platformer · 2D

Webbed
Shared: 2D Platformer · Cute · Platformer

Afterimage
Shared: 2D Platformer · Side Scroller · Female Protagonist

Öoo
Shared: 2D Platformer · Puzzle · Platformer

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

Gal Guardians: Demon Purge
Shared: 2D Platformer · Side Scroller · Platformer

Braid
Shared: 2D Platformer · Puzzle · Platformer

Laughing to Die
Shared: Puzzle · 2D Platformer · Platformer

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

Geometry Dash
Shared: Rhythm · 2D · Platformer

Thank Goodness You're Here!
Shared: 2D Platformer · Side Scroller · Platformer

Timespinner
Shared: Side Scroller · 2D Platformer · Female Protagonist

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

Eryi's Action
Shared: 2D Platformer · Platformer · Puzzle

30XX
Shared: 2D Platformer · Side Scroller · Platformer

Muse Dash
Shared: Rhythm · Female Protagonist · Cute

Touhou Hero of Ice Fairy
Shared: Side Scroller · Female Protagonist · Platformer