Games Similar to Roblox
Minecraft is a game about breaking and placing blocks. At first, people built structures to protect against nocturnal monsters, but as the game grew players worked together to create wonderful, imaginative things.
Blockland is a non-competitive multiplayer open world sandbox-style construction game in which players build using Lego-like building blocks.
Garry's Mod is a Sandbox Game for the PC and Mac 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
Blockyard is a neat, easy to play open world game. It enables you to build whatever you can imagine with blocks, axles, motors, etc. You can design a new world from scratch and amaze yourself as things tend to shape up and form different objects.
Cubelands is a free 3D-online building game made by upjers, enables you to build your very own world by Stacking and removing the cubes directly in your browser.