Endless Fluff's Valdis Story was recently updated to version 3.0. This Castlevania-like platformer is now Vista-compatible, and comes with two new techniques (dodging and parrying).
Really nice! Controls are much smoother than an earlier version I played too.
Noticed a few bugs unfortuantely. I died on the first boss (sub-boss?), and from that point on, these blue-cloud like things kept appearing on the screen, even the inventory and game-over screen.
There is also one screen in the second level that takes you back to the first level if you exit to the top-right. Just after you exit underground, after the ice boulders.
Apart from those minor things I really enjoyed slashing away at enemies and using the different skills.