Games like Omi Momi
Games like Omi Momi include Defy Gravity Extended, Human Fall Flat, LIMBO, Zup!, and Zup! 2. We matched them by the tags players give Omi Momi on Steam (Casual, Puzzle, Puzzle Platformer, 2D, and 1990's): closest matches first, and among equally close ones the better-known games.

Defy Gravity Extended
Shared: Puzzle Platformer · Puzzle · 2D

Human Fall Flat
Shared: Puzzle · Funny · Puzzle Platformer

LIMBO
Shared: Puzzle Platformer · Puzzle · 2D

Zup!
Shared: Casual · Puzzle · 2D

Zup! 2
Shared: Casual · Puzzle · 2D

Pikuniku
Shared: Casual · Puzzle · Indie

Zup! 3
Shared: Casual · Puzzle · 2D

Portal
Shared: Puzzle · Puzzle Platformer · Singleplayer

Portal 2
Shared: Puzzle · Puzzle Platformer · Singleplayer

There Is No Game: Wrong Dimension
Shared: Puzzle · Casual · Indie

Zup! S
Shared: Casual · Puzzle · 2D

Zup! X
Shared: Casual · Puzzle · 2D

Zup! 4
Shared: Casual · Puzzle · 2D

Zup! 8
Shared: Casual · Puzzle · 2D

Zup! F
Shared: Casual · Puzzle · 2D

Planet of Lana
Shared: Puzzle Platformer · Puzzle · Action

Little Inferno
Shared: Casual · Puzzle · Funny

Braid
Shared: Puzzle · Puzzle Platformer · 2D

Zup! 5
Shared: Casual · Puzzle · 2D

Plants vs. Zombies GOTY Edition
Shared: Casual · 2D · Singleplayer

Shower With Your Dad Simulator 2015: Do You Still Shower With Your Dad
Shared: 2D · Casual · Funny

PICO PARK
Shared: Puzzle Platformer · Casual · Puzzle

Zup! Z
Shared: Puzzle · Casual · 2D

Scribblenauts Unlimited
Shared: Casual · Puzzle · 2D