A mainstay on every device I own, Quadropus Rampage is a brilliantly satisfying dungeon crawler ala Zelda or The Binding of Isaac. The boss "Pete" takes permanent damage, and the variety of game modes leaves you always chasing something. QR also does freemium properly-- I put in my 99 cents to get rid of ads, but dont feel pressured to buy doubloons or max out all my stats for $$$. Another great game from Butterscotch Shenanigans!