Games like TOKKI
Games like TOKKI include Celeste, FEZ, Pikuniku, Dead Cells, and Super Meat Boy. We matched them by the tags players give TOKKI on Steam (Adventure, Casual, Puzzle, Platformer, and Roguelike): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Platformer · 2D Platformer

FEZ
Shared: Puzzle · Platformer · Adventure

Pikuniku
Shared: Adventure · Casual · Puzzle

Dead Cells
Shared: Adventure · Roguelike · 2D

Super Meat Boy
Shared: Platformer · Precision Platformer · 2D Platformer

Webbed
Shared: 2D Platformer · Platformer · Cute

Laughing to Die
Shared: Adventure · Casual · Puzzle

Downwell
Shared: Platformer · Precision Platformer · 2D Platformer

VVVVVV
Shared: Platformer · Precision Platformer · 2D Platformer

Moonleap
Shared: Puzzle · Platformer · Adventure

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

LIMBO
Shared: Puzzle · Platformer · Adventure

Zup! S
Shared: Casual · Puzzle · 2D

Out There Somewhere
Shared: Platformer · Adventure · Puzzle

Sonic Origins
Shared: Adventure · 2D Platformer · Platformer

SANABI
Shared: Adventure · 2D Platformer · Pixel Graphics

Strange Jigsaws
Shared: Adventure · Casual · Puzzle

Öoo
Shared: Puzzle · 2D Platformer · Platformer

Unpacking
Shared: Casual · Puzzle · Cute

Scribblenauts Unlimited
Shared: Casual · Adventure · Puzzle

DAVE THE DIVER
Shared: Casual · Adventure · Pixel Graphics

Zup! 2
Shared: Casual · Puzzle · 2D

ANIMAL WELL
Shared: Puzzle · Platformer · Adventure

Neva
Shared: Adventure · Platformer · Puzzle