Blendo Games has officially released the source code for its recent game, Skin Deep, inviting fellow developers to create more stealth games or delve into the innovative engine behind it, which utilizes a version of idTech4, recognized from Doom 3.

“The original idTech4 was created in 2004, which required us to add many features expected in a modern game in 2025. It was quite a lot of work!” - Blendo Games

The release facilitates developers to utilize the source code for both personal and commercial projects, though any modifications must also be shared publicly, with the original game assets remaining proprietary. You can access the source on GitHub.

This initiative resonates with Blendo Games’ reputation, known for its early support for the indie scene and for developing widely appreciated titles such as Atom Zombie Smasher. Additionally, they have rolled out a collection of example maps aimed at helping modders understand game mechanics effectively.

You can explore Skin Deep on Steam, currently reflecting a 20% discount during the Steam Summer Sale.