There is not much to see here because I am still coding the foundation of enemies generation. Nonetheless, I did created the zombie graphic. My idea is to create variants of these. However, due to time constraint, I won't produce variants until the game is feature complete.
When the enemy generation feature is complete, the program will start to resembles a game.
My goal doesn't really reach far beyond feature complete stage. All I hope for is for a complete game ready to submit for judging. When the next RubyWeekend contest comes, I hope I will be a faster coder and thus able to extend my goal a little bit beyond feature complete stage.