From publisher blurb:
Abstract Dungeon is a new roleplaying game designed to be quick and easy to learn.
The biggest difference between Abstract Dungeon and other roleplaying games is that you roll your all your dice at the start or the adventure, then spend your dice to overcome challenges. You can always win, provided you are willing to spend the resources.
You then need to describe how you overcame the challenge based on the source of the die you spent. If you spend a die from your Toughness pool, it could represent anything from punching a goblin in the face to holding your liquor, while spending a die from Intellect could represent casting a spell or presenting a logical argument.