An experimental version of Tetris created by Joseph Larson, Alleytris is perhaps the best out of the four variations posted in the same Retro Remakes forum thread. Players are expected to build horizontal lines in a well that is only four squares wide, and though the game lacks polished graphics or adequate sound effects this build is actually fun enough to warrant more than a few tries.

Name: Alleytris
Developer: Joseph Larson
Category: Puzzle
Type: Freeware
Size: 1MB
Direct download link: Click here