DOOM 87: The Lost World

"DOOM 87: The Lost World" is an upcoming vanilla-compatible DOOM II megawad. The first few maps are fairly easy, but the difficulty increases significantly by the start of the Hell episode on MAP12. Currently, a 21-map beta release is available and features some epic vanilla DOOMING action! Get ready for an exciting new adventure as Doomguy locates a secret hellspawn base on Earth known as "The Lost World."

DOOM 87: The Lost World screenshots