You are Astro Cat that orbits the Sun, in the same manner as the planets do, but in opposite direction.
Mission: Avoid the Sun and the balls (planets). Collect all the other objects. Do it in as soon as possible.
Controls: arrow down - descend towards the Sun; arrow up - go farther from the Sun.
Kepler laws: the nearer you are to the Sun, the faster you move. Use it to your advantage.