I have a great idea for a game you can make.
Ok picture this...
These odd shaped blocks come onto the screen, perhaps from the top, and start to fall to the bottom of the screen. You can move the shapes from side to side using something like um... arrow keys or something. Maybe you can even rotate them! That would be cool.
As the shapes go towards the bottom, you have to stack them and fit them together to get points. Or maybe they have to form a line of shape pieces and then the line of shape pieces will dissapear and you get points. Dunno. You decide on which method might be best.
Also, you could do something like making the shapes fall faster and the game gets harder? Like if you complete levels or something.
To top it all off, you can play japanese music to really make the gameplay intense! Or... HEY! Russian music! Now that wold be cool!
Just make sure it takes you 3-4 years to program it and it's guaranteed to get finished.