Games like Respark
Games like Respark include Hades, Dead Cells, Skul: The Hero Slayer, Anomaly Agent, and Vampire Survivors. We matched them by the tags players give Respark on Steam (Roguelite, Action Roguelike, 2D Platformer, Platformer, and Procedural Generation): closest matches first, and among equally close ones the better-known games.

Hades
Shared: Roguelite · Action Roguelike · Hack and Slash

Dead Cells
Shared: Action Roguelike · Roguelite · Hack and Slash

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

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

Vampire Survivors
Shared: Action Roguelike · Roguelite · Casual

Hades II
Shared: Roguelite · Action Roguelike · Hack and Slash

20XX
Shared: Action Roguelike · Platformer · Roguelite

BlazBlue Entropy Effect
Shared: Action Roguelike · Platformer · Action

Caveblazers
Shared: Action Roguelike · Roguelite · Platformer

Spiritfall
Shared: Action Roguelike · Roguelite · 2D Platformer

Astral Ascent
Shared: Roguelite · Action Roguelike · Hack and Slash

Death Must Die
Shared: Action Roguelike · Roguelite · Hack and Slash

30XX
Shared: Action Roguelike · 2D Platformer · Roguelite

Megabonk
Shared: Action Roguelike · Roguelite · Indie

Neon Abyss
Shared: Platformer · Procedural Generation · Shooter

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

Rogue Legacy
Shared: Platformer · Action Roguelike · Roguelite

GoNNER
Shared: Roguelite · Action Roguelike · Platformer

Cult of the Lamb
Shared: Action Roguelike · Roguelite · Cute

Downwell
Shared: Action Roguelike · Platformer · 2D Platformer

UnderMine
Shared: Roguelite · Action Roguelike · Procedural Generation

Moonlighter
Shared: Roguelite · Hack and Slash · Action Roguelike

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

Rogue Legacy 2
Shared: Platformer · Roguelite · Action