The Uplink chapters were cut during Half-Life's development phase, and roughly fit in prior to or during the Lambda Core chapter. They were, however, strongly revised for the demo release. Uplink also includes the same Hazard Course from the full release of Half-Life.
I loved this, I remember playing though it 100’s of times back in 1999 as I couldn’t afford the full game of Half Life. It got me hooked on the Half Life series!
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