Design a game with the technology limitations of the 1980s

Game Name - Falling Debris (designed for the NES)

Gameplay 

You are a average size 16 bit character and your mission is to avoid the falling Debris coming off of the nearby buildings. As you avoid more and more pieces of rubble the building starts to suffer heavy decay and the blocks get bigger and fall slightly faster every 30seconds. Your score goes up one for every piece that is evaded and every 50 points you are given 1 extra life, you start off with 3 lives and when all are lost you get game over and a chance to enter your name and score into the highscores.

Like most games from the NES it has to game options a type a and type b, also it is a 2 player game. The Type A  game is a much slower and peaceful build up to the madness that is to come when you survive longer. The Type B game puts you on the stage as if you've been dodging for 3minutes, this makes for quick and fast paced gameplay, which is great if you have friends over because you get the rush to see who can survive the longest

In the 2 player game both of the players are on the screen and you compete for the most dodges, there are also small powerups that fall down occasionally in the 2 player game, which can increase speed or give you an extra score. There are no lives in the 2 player game so its a battle to the death and who can get the top score.