Quake (video game)
 Quake is a shareware game. Quake has four episodes, each that has a group of levels. Episodes 1 and 4, 'Dimension of the Doomed' and 'The Elder World' has seven levels and a secret level. Episodes 2 and 3, 'Realm of Black Magic' and 'The Netherworld' has six levels and a secret level. Plus the starting level, which is to choose difficulty and episode, and the final level. And as well, six deathmatch arenas.