Cursed Treasure is a fantastic flash-based tower defense game with a level up system. If you’re a fan of the genre you don’t want to miss this one. It doesn’t bring anything new to the table, it’s just really well executed, has good graphics, UI, and sound, and enough depth to keep you engaged. I finished all levels with a brilliant rating. A hint: the fear power of Crypts is really powerful. I found it easiest to focus on leveling that tower type up. Also holding down shift lets you repeat actions, something that’s not obvious and which is critical to beating Ninjas with your fireball.