is the flagship franchise of Outsider Entertainment
. It is a series of beat-em-up sandbox superhero games.
- Nightfall: Hell on Earth
- Nightfall: Winterlong
- Nightfall: Hellhound
Connections to Toshiko Crash-UpEdit
- Gabriel Lupus is featured as a playable character.
- Great Arch has Nightfall as its primary franchise, and Museum has it as its secondary franchise.
- Ethal's Syringe is featured as an item.
- Vic appears as a Minion.
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