Roblox - Reimagining the way people come together.

Terraria - Dig, Fight, Build! The very world is at your fingertips as you fight for survival, fortune, and glory.

Blockland - Blockland is a non-competitive multiplayer sandbox-style construction game. It's kind of like playing with legos on the internet.

The Blockheads - Night is falling and your blockhead is freezing.

Garry’s Mod - Garry’s Mod is Funny, Sandbox, Co-op, Building, FPS, Action, Single and Multiplayer video game created by Facepunch and published by Valve.

Minecraft - A block-building game that allows you to create and explore entire worlds from scratch.