In this tutorial, I will show how to install OpenTyrian, an open source port of the DOS vertical shoot'em up Tyrian. Insane at the Raspberry Pi forum has amended the original source code of OpenTyrian to add SDL with dispmanx support. He has been able to recreate the best Tyrian experience for the pi. As Tyrian was made freeware in 2004, there's every reason to check it out.