I know that this is a little different from what I normally do, but it's something I had to do for school, and I liked it. But I also did lots of variations on it. Most of the directions are in the game, but if you want to start the game over, just press the green flag, and use the arrow keys to move! FYI, the story of this game is that you are an astronaut who is on a rocket exploring space. All of a sudden, the rocket blows up, and the only one that survives is you. Now the only way to get back to Star Land is to open the stargate/stargate portal. You have to do the rest yourself! :+)
Like I said before, this was for school, and so the project idea's not mine.