You can use the W key to change costumes, or hold the mouse for more than 0,.3 seconds. If you play GD, you know what the UFO is. If you don't, it's basically Flappy Bird. Use the bottom slider for speed and the top one for movement.
Some textures from Robtop Games and Irving Soluble Irving Soluble Youtube: https://www.youtube.com/channel/UC1hO4AvEISFb8kFE2a-i-Gg
