Games like Vaporwave World
Games like Vaporwave World include Grand Theft Auto V Legacy, Garry's Mod, Superflight, Townscaper, and Tiny Glade. We matched them by the tags players give Vaporwave World on Steam (Casual, Indie, Action, Sandbox, and Building): closest matches first, and among equally close ones the better-known games.

Grand Theft Auto V Legacy
Shared: Action · Open World · Third Person

Garry's Mod
Shared: Sandbox · Casual · Building

Superflight
Shared: Indie · Casual · Relaxing

Townscaper
Shared: Casual · Sandbox · Building

Tiny Glade
Shared: Building · Casual · Sandbox

Goat Simulator
Shared: Sandbox · Casual · Open World

Stardew Valley
Shared: Relaxing · Sandbox · Indie

House Flipper
Shared: Casual · Building · Sandbox

s&box
Shared: Casual · Sandbox · Action

Just Cause 2
Shared: Action · Sandbox · Open World

Rust
Shared: Building · Open World · Sandbox

Scrap Mechanic
Shared: Sandbox · Building · Open World

Paralives
Shared: Indie · Building · Open World

My Dream Setup
Shared: Building · Casual · Sandbox

Grand Theft Auto IV: The Complete Edition
Shared: Action · Open World · Third Person

SpaceEngine
Shared: Casual · Sandbox · Open World

Terraria
Shared: Sandbox · Building · Indie

ARK: Survival Ascended
Shared: Open World · Building · Sandbox

Planet Coaster
Shared: Building · Sandbox · Relaxing

Space Engineers
Shared: Sandbox · Building · Open World

Starbound
Shared: Sandbox · Casual · Open World

Blockland
Shared: Sandbox · Building · Action

Retrowave
Shared: Indie · Casual · Action

Grand Theft Auto V Enhanced
Shared: Action · Open World · Third Person