Vault

The Vault is a secret screen accessible through the options menu (top-right corner) that requires 10 User Coins to unlock. Once there, the player may insert certain words in a text box and press a button below, looking like a black Demon face on a lock, to unlock new icons, a trail and a secret coin.

Passwords

 * Lenny: Unlocks an Icon that looks like a "lenny".
 * Robotop: Unlocks a Robot.
 * Sparky: Obtain a Secret Coin.
 * Spooky: Unlocks an Icon that looks like a "Shy Guy" from Super Mario Brothers 2.
 * Ahead: Unlocks a Dart.
 * Blockbite: Unlocks a UFO.
 * Neverending: Unlocks a UFO.
 * Mule: Unlocks a Ship.
 * Gandalfpotter: Unlocks a Trail.

Trivia

 * The song that plays in the vault is "Random Song 01", which was also used by RobTop in one of the Update 2.0 sneak peek videos https://www.youtube.com/watch?v=ssRy9WKhCOk.
 * The face on the padlock resembles a "Demon" difficulty Icon except that it is grey, has red eyes and no horns. He is known as the Vault Keeper.