Today at the Game Developers Conference, Crytek made a major announcement about its popular CryEngine game engine, which is used for a number of major games and franchises. A version of the engine called CryEngine V launched today with a "pay-what-you-want" business model.

This follows Epic's announcement last year that the Unreal Engine would be offered to developers for free. Unity and Amazon's own Lumberyard engine are also free.

From Crytek's press release:

"CryEngine V launches today with a 'Pay What You Want' business model, offering developers everywhere total access to the engine's feature-set and full engine source code for a fee of their choosing, and with no obligation to pay royalties or additional service charges. Users who decide to make a contribution for utilizing CryEngine V can allocate up to 70 percent of the sum to Crytek's new Indie Development Fund--a grant program that will see Crytek directly supporting promising indie projects around the world.

"The latest evolution of CryEngine also introduces CryEngine Marketplace. The Marketplace will enable developers to access individual assets from Crytek's own library, as well as thousands of materials, sounds, and 3D objects created by the CryEngine community and other trusted vendors."

Crytek founder and CEO Cevat Yerli said CryEngine V represents Crytek's "commitment to not only offering developers today's most advanced engine technology, but also to making it as accessible as possible."

To mark this announcement today, Humble Bundle launched a developer-focused bundle that comes with loads and loads of assets that would normally cost a lot more.