You're a video game character, who clipped into a vast void. Luckily, the game devs added a way to escape the void by adding challenges for them (the players) to escape and get back to the game of Battle showdown (yes that's the name of the game that the game character is in.) So, try to escape and go back to dueling other players.
All of it is pretty much from me. Also, here is how to play: You have to use the arrow keys or WASD to move the little guy around. This is a logic based maze, where you have to figure out what doors to go to. The key cards will match the door color. And, for every portal thing, you will have a riddle.