In Katmai, you’ll be playing bear cards from your hand and placing them next to river tiles until all of your bears have been played. Players with the most dominance against a tile will be able to place a beeple in an unoccupied space on that tile. This will repeat over rounds and spaces will soon disappear.
 
You want the placement of your beeples to match the objective cards at the end of the river to score salmon.
 
The player with the most salmon at the end of the game wins.