I liked the idea of Aum Project. (Ps: what is d3d_textdepth? Cannot find it in the manual.)

Snombie looked good for a minigame, but as Sivan said really missing some obstacles.

Project painkiller seemed decent for a minigame but I got a crash after trying to open a door in the first few seconds. Than I tried it a second time and it crashed when I killed some guard behind an elevator.

Panzersimulator goes instantly to desktop when windows tries to focus on it (have tried several compatibility options, nothing worked).

Cubic-world & Endless & Pixelit give a black screen but sound and rest works. Not sure why they dont work correctly (tested on Windows 10 64 bit laptop with 840m nvidea card).