Games like Lightbody
Games like Lightbody include Vampire Survivors, Megabonk, Gunfire Reborn, Hades, and Skul: The Hero Slayer. We matched them by the tags players give Lightbody on Steam (Action Roguelike, 6DOF, 3D Platformer, FPS, and Roguelite): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Roguelite · Casual

Megabonk
Shared: Action Roguelike · Roguelite · Roguelike

Gunfire Reborn
Shared: Roguelite · FPS · Action Roguelike

Hades
Shared: Action Roguelike · Roguelite · Action

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

Rogue Legacy
Shared: Action Roguelike · Platformer · Action

Phantom Abyss
Shared: Action Roguelike · 3D Platformer · Action

Hades II
Shared: Action Roguelike · Action · Roguelite

Roboquest
Shared: Action Roguelike · FPS · Roguelite

BALL x PIT
Shared: Roguelite · Action Roguelike · Action

Risk of Rain (2013)
Shared: Action Roguelike · Action · Platformer

Crab Champions
Shared: Action Roguelike · Arcade · Roguelike

Risk of Rain 2
Shared: Action Roguelike · Roguelite · Action

Haste
Shared: 3D Platformer · Roguelite · Action

Ziggurat
Shared: Action Roguelike · Roguelite · FPS

Neon Echo
Shared: Action Roguelike · 3D Platformer · Action

Halls of Torment
Shared: Action Roguelike · Roguelite · Action

Dead Cells
Shared: Action Roguelike · Roguelite · Roguelike

Neon White
Shared: 3D Platformer · FPS · Action

Deadzone: Rogue
Shared: FPS · Roguelite · Roguelike

Spelunky
Shared: Action Roguelike · Platformer · Roguelike

Rogue Legacy 2
Shared: Action · Roguelite · Arcade

Soulstone Survivors
Shared: Action Roguelike · Roguelite · Action

BPM: BULLETS PER MINUTE
Shared: FPS · Action Roguelike · Action