In River Dragons, you want to move your pawn over a system of bridge-like planks to the other side of the board. An easy task! Or at least it would be if everyone were working together, but alas you're not. Instead you're all working on your own right next to one another, each convinced that your way is best.
In game terms, players simultaneously select five action cards to be performed from the nine actions available and lay them down in order they are to be played. The turn is then resolved one card at a time. The actions allow players to place plank foundations, place planks, move their pawns, cancel other players' actions, or remove planks or foundation stones. As can be expected for a design with simultaneous action selection, the game is rather chaotic.