Quake 2 dev felt breathless when he saw how Valve was using id Software's engine

All roads lead to Alice ...
Kotaku

Quake II

All the Latest Game Footage and Images from Quake II This remastered release includes: – Quake II (original version and enhanced release) – The N64 version of Quake II – Quake II Mission Pack: The ...

Alice creator American McGee says he was inspired by a Valve demo he saw while working on Quake 2

McGee was fired from id Software in 1998, but it all worked out pretty well for him.