Tetris

This version of Tetris for the ZX81 plays just like the original game. Blocks are dropped from the top of the screen and the player's job is to piece these together into complete rows that then disappear. The player can move the pieces left, right and down and rotate them both clockwise and anticlockwise. As more and more rows are removed the game's level goes up leading to an increase of pace. For each row removed the player earns points and the game goes on until pieces reach the top of the screen.