I’ve been working on a project to make an old school shooter like Doom or Duke Nukem 3D using Unreal Engine. All the game logic will be shared in the future for free so anyone can make their own sprite based FPS including multiplayer.
I just finished a remake of E1M1 I made with SketchUp and Freedoom assets. Here it is some gameplay:
And if you want to try it you can get it here.
I’m working on the weapon system, I’ll post some updates when I finish.