Mod and Play

Facepunch Studios

Garry's Mod is a physics sandbox. There aren't any predefined aims or goals. We give you the tools and leave you to play.

Alientrap

Modbox is a multiplayer game creation sandbox for Desktop+VR

Deep Voodoo Games

An open multiplayer sandbox game; includes tools, props, levels, NPCs, character models, game-modes and much more! Make your own using our mod kit!

Freejam

Make your own games in this powerful sandbox building engine. Vehicle simulators, first person shooters! No coding knowledge required, create games using blocks and then publish them online for others to play. BUILD IT, PLAY IT, SHARE IT!

Quantum Lion Labs

Explore NervBox, the multiplayer VR physics sandbox where imagination is your greatest tool. Continuously evolving with new tools and community-driven features, NervBox invites you to build, break, and reshape the boundaries of virtual reality.

PIXOWL INC.

READY FOR CRAFTING VIRTUAL WORLDS ON YOUR PC?The acclaimed world-building game featuring a unique mission-based approach is coming onto PC via Steam Early Access. With over 16 million players on mobile & tablets versions and 1,500,000 pixel blocks creations shared in the Online Gallery to date, this PC version is taking world...

Studio Monolith

Get ready to enter a new era of physics platforming. Polyball is a classic ball rolling game in the vein of Super Monkey Ball, Marble Madness, and Marble Blast - while taking cues from games such as the Sonic series, Trackmania, and Mario Kart.

Vitor Pêgas

Ever wanted to create your own Multiplayer FPS? Now you can!"But.. it's hard." No, it isn't, you just need motivation and some basic programming knowledge.This game is the Free-to-play Demo of what you can create by watching the Video Series "How to Create a Multiplayer FPS in Unity" available on Steam Video Platform!