Slope Extra is a great ball rolling game and you have to avoid obstacles on sloping ramps. This game is a great endless ball rolling game. You control a rolling ball and it keeps accelerating. You try to go the farthest distance without hitting the obstacles and you will encounter new obstacles. Slope Extra, ball rolling game, endless runner, arcade game, mobile game, PC game, obstacle avoidance, hypercasual, 3D, control, accelerate, score, challenging, fun, casual gaming