Looking for an extremely simple game in c++...

I'm a beginner in C++ and I started working on animation in C++ and I ws looking all over the internet for some extremely simple animated game like Space Invaders or Snake or Tetris, although Tetris may be too complicated but all of them used graphics. I don't know grahpics and was just looking for something made strictly out of ASCII.

Does anyone have the source code of one of these extremely simple games, not using graphics?

Thanks

 

I have sorce code for a version of Tetris that I downloaded from CodeProject.com. It does uses GUI though.