Games like SmFly: Gravity Adventure
Games like SmFly: Gravity Adventure include Rogue Legacy 2, Vampire Survivors, Skul: The Hero Slayer, Dead Cells, and Downwell. We matched them by the tags players give SmFly: Gravity Adventure on Steam (Action, Adventure, Casual, Arcade, and Platformer): closest matches first, and among equally close ones the better-known games.

Rogue Legacy 2
Shared: Action · Arcade · Platformer

Vampire Survivors
Shared: Action Roguelike · Roguelite · Casual

Skul: The Hero Slayer
Shared: Action · Action Roguelike · Platformer

Dead Cells
Shared: Adventure · Action Roguelike · Roguelite

Downwell
Shared: Action · Platformer · Arcade

Sonic Origins
Shared: Action · Adventure · 2D Platformer

Pikuniku
Shared: Adventure · Casual · Action

Rogue Legacy
Shared: Action · Platformer · Action Roguelike

Sonic Superstars
Shared: Action · Adventure · Platformer

SANABI
Shared: Action · Adventure · 2D Platformer

20XX
Shared: Action · Platformer · Action Roguelike

Twin Shot Deluxe
Shared: Action · Casual · Arcade

UFO 50
Shared: Action · Arcade · Adventure

Thank Goodness You're Here!
Shared: Adventure · Casual · 2D Platformer

Pizza Tower
Shared: 2D Platformer · Platformer · Action

Broforce
Shared: Action · Platformer · 2D

BEEP
Shared: Adventure · Platformer · Action

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

BlazBlue Entropy Effect
Shared: Action · Action Roguelike · Platformer

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

Juicy Realm
Shared: Action · Adventure · Casual

ScourgeBringer
Shared: Action · Adventure · Roguelite

BALL x PIT
Shared: Action · Arcade · Roguelite

Megabonk
Shared: Action Roguelike · Action · Roguelite