Use the arrow keys to move up, down, and all around half of the screen to avoid rocks, and find determination. How long can YOU survive? Every second, the rocks get heavier, falling faster and faster. Grab determination to not only increase your score, but also lighten the rocks for a bit.
UPDATE: Now with increasing difficulty, smoother animations, a better thumbnail, collision only on Lesser Dog's head, and more rocks! HUUUUUGE CREDIT goes to Toby Fox for Undertale. Rocks, stars, snow, backdrop, thumbnail, and balloons all made by me.