River Defense

Game description
River Defense is a tower defense game with a twist - critters don't follow predefined paths, and your towers can push and pull them around before destroying them. You can also watch others play in Spectate Mode.
How to play
Use keys 1-8 and click in the playing field to build guns. Select a gun and press S to sell it or U to upgrade it. Press N to send the next wave early. For strategy and hints, check out Spectate Mode and the High Scores, where you can watch what other players are doing!