Kayak Extreme is a kayaking simulation game, probably the first Kayak sim ever made. Kayak Extreme features very impressive 3D graphics (water is especially well done with special attention given to physics), four totally unique racing environments: Alpine, South Africa, Alaska, and Training Stadium, and Championship and Free Race modes. You can choose from three different kayaks, three different paddles (more are unlocked as you progress) and race against the clock in three difficulty settings to get through for each environment. Kayak Extreme is very original and well done game, though to pay 20 bucks for 3 rivers plus one training level, and no multiplayer...It's probably too high cost (for example Serious Sam costs 20 bucks too). I bet most gamers will play this free demo (25.3MB) instead to buy this quite expensive game.