Counter Strike 1.6 Digitalzone -

LAN centers would pre-install DigitalZone on all PCs, so friends could jump into a match within seconds. It became a social ritual — shouting across the room after a lucky headshot.

New players could practice against bots (PODBot or YaPB) with custom difficulty levels, learning maps without online pressure. Counter Strike 1.6 Digitalzone

You might ask: Why not just play CS2? It’s a fair question. But the players flocking to Counter Strike 1.6 Digitalzone aren't doing it for graphics. They are doing it for physics. LAN centers would pre-install DigitalZone on all PCs,