Roblox is described as 'Online platform for 3D world building, avatar customization, multiplayer play, and user-generated game development with trading, achievements, and a virtual economy' and is a popular Sandbox Game in the games category. There are more than 50 games similar to Roblox for a variety of platforms, including Windows, Android, Mac, Web-based and Linux apps. The best Roblox alternative is Garry's Mod. It's not free, so if you're looking for a free alternative, you could try VoxeLibre (formerly MineClone2) or Terasology. Other Roblox like games are LEGO Worlds, Polytoria, Core Games and Yahaha.
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
United Kingdom
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
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
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
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.
Blockland is an online multiplayer game where you build things with bricks. It's like playing with legos on the internet.
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!
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!
