On each floor, there can be multiple chests. Opening a chest gives between 15% and 30% of your current level's experience. So, with a bit of luck, and completing all 10 floors (up to twice a day with a Daily Tower Scroll), you can get a significant level boost. The Tower always gives experience based on your current level, so it's beneficial no matter what stage of the game you're in. The chance to obtain Basic and Elite Artefact Caskets increases as the Tower difficulty rises. You can also find bonus items like Surprise Cubes (which can contain custom potions like the Experience Potion), Wheel Upgrade Scrolls, and more.
Guaranteed Chests | 1 to 5 chests per floor |
Chest Experience | 15% to 30% of your level's XP |