So...the most ambitious game I'd like to implement is some kind of Jump'n'run.
The image above is my proposed level design. It is 88 pixels wide, so I assume the level should fit into a 5x3 array of long varibles. The positions of the crates, the powerup and the enemies are goin to be stored separately. The first thing I'd like to do is to draw the level in itself (the green dots) followed by the character (white dot) to try out the basic mechanics (scrolling, jumping, falling [including falling to one's death]).