Codename - Blut Engel is a homebrew arcade game released in 2006. Homebrew games are created independently, outside of official game development companies. Blut Engel's gameplay and specifics would depend entirely on the developer's creativity and resources,  making a concrete introduction difficult without knowing the original developer's intended experience and style.  It's not associated with any major game company, only the independent creator(s).

Codename - Blut Engel (2006-01-19)

Cobra-Command (World revision 5)