Gorky 17 / Odium (Linux)

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 is to explain the hybrids' presence and to find the missing members of Group One.It is, actually, not a retail version but a hack over demo.

Should be working fully though.