Triglav is an action rpg played through a web browser, the artwork is great, thand the bosses are really cool. Basically you climb a tower of 50 levels by defeating the monsters and bosses on each level and getting a key to open the door to the next level. The only problem i have with it is that if you don't play for awhile or die too many time your account will be deleted.

link:http://www.smokymonkeys.com/triglav/