3D Simulator

Algodoo is a 2D simulator freeware product designed as a physics learning tool. It was originally created by Emil Emerfeldt as part of his master’s thesis in 2008. Read more about Algodoo.

Interactive 2D & 3D Physics simulation software

The Powder Toy is a desktop version of the classic 'falling sand' physics sandbox game, it simulates air pressure and velocity as well as heat!

Open Source

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

This action-adventure platformer throws you into a procedurally generated galaxy where you can make your mark.

Haven and Hearth is an addictive, Massively Multiplayer Online, Role-playing, Sandbox, and Loosely-based video game inspired by Germanic myth and legend and Slavic.

King Arthur’s Gold is an Arcade, Action, Fast-paced, Combat, City-Building and Multiplayer video game developed and published by Transhuman Design.

Terraria 2 is an Action-Adventure, Crafting, Exploration and Single-player video game by 505 Games.

Minecraft clone for Playstation Portable (PSP)

StarForge is an Action-Adventure, RPG, Voxel-based, Combat, Survival, First-person Shooter, Single and Multiplayer video game developed and published by Code Hatch.

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

Voxel Turf is a free-roaming voxel-based city building (and destroying) game, inspired by...

Block N Load is a Free-to-play, Action-Adventure, Sandbox, Building, FPS, Team-based, Single and Multiplayer video game by Jagex.