Gravity Field

Description
Have you ever wanted to, suddenly one day, you?re upside down, feet tread on the ceiling? Now, when you start after a period of magical adventures in space, the day has come. When you are on an unknown planet, gravity suddenly become so incredible, you gain the ability to reverse-gravity, you are not on the head up, feet down. You can easily fly to the top of the mysterious caves, and even, also rotated 90 degrees on a vertical rock wall of the cave.

Instructions
Arrows to move, space bar to change gravity.