Greentube today announced Ski Challenge 08, the next installment of the ski game set to be released during the beginning of December, 2007. The game is financed by dynamic in-game advertising with partners like Visa, Siemens, Reise.com, MyVideo, Red Bull, Tipp3, Swisscom, Telenor, BNBank, Kronen Zeitung, Uniqa and AON. Check the press release for more details.