Games like Jelly's Adventure
Games like Jelly's Adventure include Hollow Knight, DAVE THE DIVER, Slime Rancher, Hollow Knight: Silksong, and FEZ. We matched them by the tags players give Jelly's Adventure on Steam (Adventure, Casual, Platformer, Exploration, and 2D): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Platformer · 2D · Exploration

DAVE THE DIVER
Shared: Casual · Adventure · Exploration

Slime Rancher
Shared: Adventure · Exploration · Singleplayer

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

FEZ
Shared: Platformer · Exploration · Adventure

Castle of Illusion
Shared: Adventure · Platformer · Casual

Scribblenauts Unlimited
Shared: Casual · Adventure · Family Friendly

DuckTales: Remastered
Shared: Adventure · Platformer · Casual

Ori and the Will of the Wisps
Shared: Platformer · Adventure · Singleplayer

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

Chained Together
Shared: Adventure · Platformer · Casual

BEEP
Shared: Adventure · Platformer · 2D

Sonic Mania
Shared: Platformer · 2D · Adventure

A Short Hike
Shared: Adventure · Exploration · Casual

ABZU
Shared: Adventure · Exploration · Casual

Sonic Origins
Shared: Adventure · Platformer · Casual

Pikuniku
Shared: Adventure · Casual · Platformer

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

Yoku's Island Express
Shared: Adventure · Platformer · Family Friendly

Strange Jigsaws
Shared: Adventure · Casual · 2D

Terraria
Shared: Adventure · 2D · Exploration

Reventure
Shared: Adventure · Platformer · 2D

Rayman® Legends
Shared: Adventure · Platformer · 2D

Dust: An Elysian Tail
Shared: Platformer · Adventure · 2D