One of the most popular alternatives to Roblox is Garry's Mod. It's paid, but VoxeLibre (formerly MineClone2) and Terasology are free. Other popular alternatives are Polytoria, LEGO Worlds, Yahaha and Minetest Game. There's no shortage of Sandbox Games like Roblox, with more than 50 alternatives for Windows, Android, Mac, Linux and the web.
Garry's Mod is a Sandbox Game based around the idea of building. Unlike most other games there aren't any objectives - you can't lose and you definitely can't win. Doesn't work on MacOS 11.15 or higher.
United Kingdom
Survive, farm, build, explore, play with friends, and do much more. Inspired by Minecraft, pushing beyond.
Germany
EU
Terasology (started under the name Blockmania) is an open source project started by Benjamin “begla” Glatzel to research procedural terrain generation and efficient rendering techniques in Java using the LWJGL.
GermanyEU
Polytoria is a free-to-play platform and website similar to Roblox. You can create levels, play levels, talk in a forum, customize your avatar and do many more activities.
NetherlandsEU
United Kingdom
YAHAHA is the best virtual platform to create and enjoy an immersive 3D interaction with friends. Invite your friends to play the featured game Hide And Seek with you. Then discover an infinite variety of games with new concepts that can lead you to new YAHAHA gaming clusters.
FinlandEU
A basic game for Luanti (formerly Minetest) developed by the Minetest team, often referred to as "Vanilla Minetest". It includes mods for basic tools, nodes, & an API for player visuals.
GermanyEU
Core is an endless universe of games and worlds designed by a global community of creators. It's a radically accessible game construction kit, content exchange, and game-playing platform, all in one.
United States
Play in unique, community-made game modes, create custom addons with Lua, and import assets from Unreal Engine 5. Host your own server and enjoy endless gaming possibilities with friends!
Tired of the roblox tyranny and greed? The Novetus community game is the solution! Novetus was made to improve on RBXLegacy, with the addition of new features that enhance the launcher for mod development, player customization, and overall usability.
A multiplayer brick building game that gives you the tools to create and play, your way. Build and invent with your friends, or blow them to smithereens!
