All levels unlocked.
One day in Arcade Center there was a regular Arcade Machine with the game called Brave Viking. The viking's role in the arcade game is to slay the dragon and rescue the princess so they can fall in love, but one day something went horribly wrong. Some wiring shorted out and came apart and the viking's sword and shield was replaced with a lollipop and a donut. Seeing as how you cannot fight a dragon with that the viking will have to venture through many different classic arcade games to collect items and correct the glitch in the game. Keep a look out for hidden items for extra bonus points.