Try before you buy. No ads. A one-time in-app purchase unlocks the full game. Jump a rift, fight off monsters, plunder their world. Rift Riff is a strategic mix of juicy tower loadouts, varied monster behaviors, and forgiving mechanics. The game features ± 15–20 hours of gameplay, and includes: - 20 worlds with 2 or more scenarios each. - 17 tower types with 7 overpowered upgrades. - 25 monster types with varying behaviors. - 6 companions who'll assist you and your towers. - 45 challenges for die hards.