Games like Multiworlds
Games like Multiworlds include Cyberpunk 2077, BioShock Infinite, Aimlabs, Far Cry 3, and RoboCop: Rogue City. We matched them by the tags players give Multiworlds on Steam (Action, God Game, Word Game, 3D Platformer, and FPS): closest matches first, and among equally close ones the better-known games.

Cyberpunk 2077
Shared: Cyberpunk · FPS · RPG

BioShock Infinite
Shared: Action · FPS · First-Person

Aimlabs
Shared: Action · FPS · First-Person

Far Cry 3
Shared: Action · FPS · Adventure

RoboCop: Rogue City
Shared: Action · FPS · First-Person

Far Cry® 4
Shared: Action · FPS · First-Person

Counter-Strike 2
Shared: Action · FPS · First-Person

Rust
Shared: Action · First-Person · Adventure

PUBG: BATTLEGROUNDS
Shared: Action · FPS · Survival

Neon White
Shared: 3D Platformer · FPS · Action

Atomic Heart
Shared: Action · FPS · Adventure

Mirror's Edge™ Catalyst
Shared: Action · 3D Platformer · Runner

Far Cry® New Dawn
Shared: Action · FPS · First-Person

Far Cry® Primal
Shared: Action · First-Person · Adventure

Apex Legends™
Shared: FPS · Action · First-Person

Fallout: New Vegas
Shared: Action · RPG · First-Person

Phantom Abyss
Shared: Action · 3D Platformer · Adventure

Half-Life 2
Shared: Action · FPS · First-Person

KovaaK's
Shared: Action · FPS · First-Person

Bomb Rush Cyberfunk
Shared: Action · 3D Platformer · Adventure

Borderlands 2
Shared: Action · FPS · First-Person

Fallout 4
Shared: Action · Adventure · RPG

S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: FPS · Action · First-Person

Black Mesa
Shared: Action · FPS · First-Person