Hell To Pay is a partial conversion for Doom II created by Wraith Corporation in 1996 and published by WizardWorks. A 15 level demo version was distributed via the Internet and on the D!ZONE Gold compilation disc. In the plot of Hell To Pay, Earth is invaded by demonic aliens, and the player must journey to Planet Hell in order to activate the planet-killer bomb meant for Earth. The full version retailed for $14.99.