5 Days a Stranger is a freeware horror-themed point-and-click adventure developed by Ben 'Yahtzee' Croshaw using AGS and released for Windows in 2003.
horror puzzle-solving freewareChampionship Manager: Season 03/04 is an updated edition of Championship Manager 4, the famous soccer/football management sim. Eidos released it in November 2003 for Microsoft Windows only.
business simulation football soccer sport managementHalo: Combat Evolved is a sci-fi first-person shooter created by Bungie Studios for Microsoft and released for the Xbox in 2001, then ported to Windows and Macintosh by GearBox in 2003.
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