MSQ is a game where you play as Metal Sonic (it features the Sonic cast) as he, at first, tries to find all 7 Emeralds to restore his data banks. But, as you progress through the game, many zany characters will come in, making you do other stuff. There are quite a few secrets to find in the game, most are easy. There is also a second game mode, Multiplayer Mode, although it's easily beaten with only one person.
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In this game (which is totally AWWESOME), you play as Metal Sonic and go through a quest uncovering secrets and cool stuff. I love this game and I hope everyone will too!