Take turns to drop tokens into the frame and try to be the first to connect 4 in a line of your colour horizontally, vertically or diagonally.
See if you can beat the computer; it plays a mean game.
Can also be played against another player.
Full Help facility.
Open in Portrait orientation.
Also available from i.compactfun.com if you cannot download from the Android Market. Versions for iPhone, iPod Touch, iPad, Nokia, Windows PCs and Macs also available from there.
Also available ad-free individually and in the Compact Games app.