Awful. Lags like hell, completely pointless, not like there isn't 489237689376803 different versions of Pong here already, of which 95% are more interesting (i.e. have sound, opponent, are well programmed, some even do something slightly different given it's a 45 year old game). Thought about giving you half a star given that it at least is titled as finished unlike that other game you keep uploading pointless betas for, but decided that would be too generous. Make your own game and finish it.