Diablo II launches in North America
Blizzard North released Diablo II for Windows in North America on June 29, 2000 — the loot-driven action RPG that defined its genre and sold millions within weeks.
Source: Wikipedia — Diablo II: 'Release NA/PAL: June 29, 2000'; Destructoid — 'On June 29, 2000, Diablo II was released in the US'