The name of gaming giant Sega's latest game tells you exactly what it is - a "Toylet." Filling an odd gap in the market, the game allows men to play while they pee. Sega's lead producer Hirotaka Machida explains how the urinal game came into existence: Hirotaka Machida, "Toylet" Producer At Sega, saying (Japanese) "We came up with the concept that men, you know, have their own built-in games controllers. So we thought let's make some games using those." Using urine as this controller, a sensor inside the toilet measures the stream's volume and speed. Then Sega's software matches that in a selection of five video games that varies from answering quiz questions to blowing up a girl's skirt. At 150,000 yen or $2000 U.S. dollars a unit, Toylet isn't cheap. After tests in restaurants and pubs the game proved to be a hit with an unusual demographic - the elderly: Pub Customer, Ishii Shirai, saying (Japanese) "I look forward to standing there and seeing how much comes out, you know, how much you've got in you." Pub Customer, saying (Japanese) "It's great fun. By that I mean, well, it's a bit weird but the first time I tried it I peed 500 milliliters; now it's over 600. I really felt I'd made it, a great sense of achievement." Toylet is currently only available in Japan, but Sega says that it's efforting to release the game world-wide later this year.