We have a classless 'advancement' system. As you level you may choose different traits to mold your character the way you want. Some examples would be the Hand-to-Hand tree, it offers armor bonus when wearing no armor, attack and damage bonus when fighting unarmed, and the ability to meditate to regain health, not to mention multiple unarmed attacks and special moves!
The gameplay system is a d100 system, that is a combination of basic addition, and percentage based rolls. Every roll for conflicts you add a number, and every roll for other resistances, etc. you roll based on a percentage. As you gain levels, the math for combat morphs to the same percentage based system for quick gameplay and ease of use.
Characters can be made in 15 minutes, and on a first play you are more likely to spend more time making your character decisions rather than actually making the character.