Arkhelom 3D is a 3d shmup with insane action. It combines horizontal, vertical and side-scrolling levels, + 70 enemies types and final bosses, 23 amazing levels.
Got the game in a bundle a while back and finally installed it yesterday, but I couldn't stomach playing more than 5 mins. Very buggy, low resolution. Trying to open the options screen, the game kept crashing. Once I finally got into it, I was disappointed by the lack of options.