C4

For two local players (or one Geri), alternating on keyboard controls. Left/right arrow to choose the column, down arrow to drop the chip. Play until one player manages to get four chips in a row: horizontally, vertically or diagonally. Draw if frame is filled completely.

This is a tutorial demo for writing games with the Canned Heat "game engine" for Racket/Urlang. Source repo and more information can be found at https://hg.sr.ht/~oofoe/candheat .