Fourcube is a 3-dimensional, multi-layer, Tic-Tac-Toe like game... except that one has to get four squares in a row instead of just three. One can play against the computer, or another person, or even let the game play two computer control players against each other. It supports both keyboard and joystick support, and allows one to rotate the board to get a better view of piece placements. The original author, David Bush, even released a mini-manual (see below) for the game, after he released it to the public recently.
Title: Fourcube
Author: David Bush
Publisher: Novasoft (Tom Mix subsiduary)
Released: late 1986
Requires: Color Computer 1,2,3, 32K RAM, tape or disk, joystick optional.
Download FOURCUBE.TXT (instructions from the author)