I started working on the details of the full game. Since I always just dive into a game and then lose myself along the way, I think trying a planned approach might be better.
I am going to have 3 game "modes":
1. Hyperspace (for lack of a better name right now) - This will consist of playing the piano-ship to fight asteroids, enemy ships and bosses. This is what the ludum dare MTR compo game was about.
2. Space - You will again be flying around as the piano ship, looking for the hyperspace jump points to get to the next planets. I'm thinking the flight will be 2D, and play like the old asteroids game. Except if you encounter an enemy, it will take you into the "hyperspace" type scene (without the moving stars). There, you will fight the enemy ship. Once you beat the ship, your song will be the new song playing in the background. I'm thinking of having wormholes shunting you to different sectors of space via the "Beneath your House" mechanic (http://www.stencyl.com/game/play/26066
). I am not quite sure how that will go over, though.
3. Ground - You will be able to walk around the ship and the different planets you visit. This will be 2.5D type style. Your weapon of choice will be a guitar. I think I have the mechanics of the guitar figured out in my head, but not finished for practical use. As you walk around the scenes, you will encounter enemies and go into a combat scenario - like the space fights. Instead, you will be strumming your guitar. After combat, you will have your guitar song as the background music.
What people seemed to like about the original MTR was the music playback and that music was the weapon (as in music had power). I want to stay true to that for the full game.