GamersGate are throwing a 'Van Helsing weekend,' which allows you to grab their two excellent action RPGs at a serious saving. The Incredible Adventures Of Van Helsing was a fantastic start for the franchise, injecting humour and personality into the addictive Diablo formula, while its sequel pushed the boat out in practically every direction possible. For reference: our Van Helsing I review and Van Helsing II review.
The first game is available as a complete edition for £3.75, whereas the sequel will run you £6. You can import your character over and continue the adventure with more advanced skills, and I'd highly recommend doing so.