Gorky 17

Gorky 17 (released as Odium in North America) is a horror conspiracy game mixing elements of strategy and RPG gameplay. The player commands a small group of NATO soldiers who must reveal the mystery behind the sudden appearance of hybrid creatures in a small Polish city named Lubin. The city is being terrorized, the area is surrounded by NATO troops and media from all over the world, and the first group sent into the city disappears without a trace. The main hero of the story is the 40-year old soldier Cole Sullivan, a commando team member with extensive scientific knowledge. His team's task: to explain the hybrids' presence and to find the missing members of Group One. But that, of course, is just the beginning...

Minimum system requirements: 

CPU: 300 MHz (x86 compatible)
RAM: 64 MB
GPU: A display = 640x480
HDD: ~520 MB