LISP-tac-toe is a one-player tic-tac-toe game written in LISP. In order to play it, either download the FAS file below, place it in the same directory as your LISP compiler (I use CLISP by Bruno Haible; it is free and as far as I can tell, good), then open your compiler and type (load "lisptactoe.fas") at the prompt, then type (start), or type (instructions) for further instructions. Basically, you move by typing (move 4) for example, to move to the middle square in the left-most column. The positions are:
OR, you could download the source code, and compile it using your compiler. To download the source, click the link at the bottom, and save the file into the same directory as your compiler. Then, in the compiler, type (compile-file "lisptactoe.lsp"), then type (load "lisptactoe.fas"), then type (start) to start or (instructions) to view instructions. That's it!
To view the source, click the third link below.