EXCALIBUR FX-KS105-CS Fox Sports Football Keychain. Fox Sports Handheld Keychains offer the same exciting play as the rest of the Fox Handheld Games lineup, but in an even more portable, dual-function design. You get all the the same sports action, plus three levels of difficulty and easy-to-use controls. Play a complete four-quarters of football with more than 15 plays to choose from! Play both offense and defense. Return kickoffs and punts. Pass, run, punt, and kick field goals. Kick the extra point or risk going for the two-point conversion to bring home the win.