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. 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!