Games like Gump
Games like Gump include BlazBlue Entropy Effect, Webbed, Vampire Survivors, ANTONBLAST, and Ori and the Will of the Wisps. We matched them by the tags players give Gump on Steam (Action Roguelike, Choose Your Own Adventure, 2D Platformer, Exploration, and Arcade): closest matches first, and among equally close ones the better-known games.

BlazBlue Entropy Effect
Shared: Action Roguelike · Action-Adventure · Action

Webbed
Shared: 2D Platformer · Exploration · Cute

Vampire Survivors
Shared: Action Roguelike · 2D · Arcade

ANTONBLAST
Shared: 2D Platformer · Action · 2D

Ori and the Will of the Wisps
Shared: Action · Exploration · Action-Adventure

SUPER CHICKEN JUMPER
Shared: Arcade · 2D · Action-Adventure

Skul: The Hero Slayer
Shared: Action Roguelike · Action · 2D

Rise of the Tomb Raider™
Shared: Action · Exploration · Action-Adventure

SANABI
Shared: 2D Platformer · Action · 2D

Crimson Desert Enhanced
Shared: Exploration · Action · Action-Adventure

Have a Nice Death
Shared: Action Roguelike · 2D Platformer · 2D

Darwin's Paradox!
Shared: Action · Action-Adventure · Puzzle

Downwell
Shared: Action Roguelike · 2D Platformer · Arcade

Prince of Persia The Lost Crown
Shared: 2D Platformer · Exploration · Action

Tomb Raider Game of the Year
Shared: Action · Exploration · Action-Adventure

Stray
Shared: Exploration · Cute · Adventure

Öoo
Shared: 2D Platformer · Exploration · 2D

TUNIC
Shared: Exploration · Action-Adventure · Puzzle

Journey To The Savage Planet
Shared: Exploration · Action-Adventure · Action

Planet of Lana
Shared: 2D Platformer · Action · Puzzle

Momodora: Reverie Under The Moonlight
Shared: 2D Platformer · Exploration · 2D

Pizza Tower
Shared: 2D Platformer · Cartoony · Action

Rain World
Shared: Exploration · 2D · 2D Platformer

Anomaly Agent
Shared: Action Roguelike · 2D Platformer · Action-Adventure