This is a simple Connect Four game.
You can play against a friend or a computer player, or watch two computer players test each other's wits. (They're not very smart.)
It should be compatible with all modern desktop and mobile browsers. Even IE6 and IE8 are mostly supported, thanks to jQuery 1.11 and es5-shim.
Created by Bartosz Dziewoński. Source code and assets are released under the MIT License.