AtomicGamer has published
a five-page review that hands out some criticism (but mostly praise) toward the PC version of Mass Effect. The score comes in at 92%:
From beginning to end, Mass Effect is a powerful and highly entertaining game that mixes tactical action and a full-fledged RPG together in exciting ways. The universe that Bioware has created is intriguing, even if the level of storytelling isn't quite as great as what we got in KOTOR, but it's still great and the focus on firearms rather than melee combat really does work well. PC gamers will find that even though this game started on consoles, it should satisfy their need for hardcore action and RPG pretty well as long as they can meet the system requirements and they look past the couple of new features that just don't work very well. It still doesn't quite live up to the masterful story and whizzing lightsabers of Knights of the Old Republic, but for the first game in a new series, Mass Effect is an excellent start.
Mass Effect PC Review 
Linear Mode
