Doom 3 demo
Windows 98/Me/2000/XP, 1.5GHz CPU, 384MB RAM, 500MB disk space, 64MB VRAM, DirectX 9.0b.
Publisher's description of Doom 3 demo
This demo has been rated M by the ESRB for violence and gore.
A massive demonic invasion has overwhelmed the Union Aerospace Corporation's (UAC) Mars Research Facility, leaving only chaos and horror in its wake. As one of only a few survivors, you struggle with shock and fear as you fight your way to hell and back, in an epic clash against pure evil. Play through part of the beginning of the game in this single-player demo.