Garry's Mod creator partners with Valve in deal that ensures games made in his sandbox gem's new successor can be sold royalty-free on Steam: "It's just waiting for us now"

Garry's Mod.

In a remarkably philanthropic move, Valve and Garry Newman have agreed to a deal that will allow creations on S&box, the upcoming successor to Garry's Mod, to be sold royalty free. This opens creators using the toolkit up to the same returns they'd get if they were utilizing Unity or similar.

Arriving 20 years after Garry's Mod first released, S&box is an evolution of the idea, which is a gamified and streamlined development tool for people to experiment and create projects with. Where Garry's Mod used Valve's Source engine, S&box uses Source2, and it's due to go public this coming April.