To unlock Vectrepede, during the title screen, hold down buttons one and three, then press four on the controller.
Infinite lives/level skipEdit
To earn infinite lives on Spike Hoppin', deliberately score no points by jumping off the top triangle during a game to your death. Do this until you are on your last life, lose it by jumping, but hold down button four to earn infinite lives.
This also activates the level skipper. If you want to skip to the next level during a game, press button one.
See Voyager flybyEdit
To see a vector version of the Star Trek Voyager ship, on the copyright screen, hold down buttons one, two and four until it appears.