Gorescript is a voxel doom clone of doom. It isn't exactly doom but it is clearly heavily inspired.
The game has unquie levels, but its AI isn't, there is red pacman who charges at you, and blue triangle eye that shoots at you.
The game has performance issues on my chromebook, and playing with a touchpad makes it nearly impossible. I had to turn off various settings in video settings inorder to have 20-30fps.
In the time I played this I enjoyed it. The only thing that it could improve on is to allow look controlls with arrow keys, and maybe controller support.
To download the game just click here: https://chrome.google.com/webstore/detail/gorescript/bbohlinegjlacogbjchanihbiiboabcp?utm_source=chrome-app-launcher-search