Rebellion is giving away Aliens vs Predator Classic 2000 on Steam (https://www.pcgamer.com/rebellion-is-giving-away-aliens-vs-predator-classic-2000-on-steam/?utm_campaign=socialflow&utm_source=twitter.com&utm_medium=social)
QuoteAliens vs Predator was originally released as Aliens vs Predator Gold in 2000, and right now it's on sale on Steam for $1. (The regular price is $4.)