Assertion: doom's release | /r/HasProperty | master levels
Facets:
Source sentences:
text: Doom II: Hell on Earth was released in 1994, followed by two other official releases based on its version of the Doom engine: Master Levels for Doom II in 1995, and Final Doom in 1996.
text: Doom II: Hell on Earth was released in 1994, followed by two other official releases based on its version of the Doom engine: Master Levels for Doom II in 1995, and Final Doom in 1996.