Each player tries to erode their mountain and generate the most amount of sediment in their delta. Players erode their mountains with the processes they successfully bid on and acquire. The sediment supplied to the delta becomes the coinage used in the bidding process. Mountain uplifts 1,500 meters per turn until one player reaches 8,000 meters or the ACTIVE UPLIFT SHUTDOWN event card is drawn. Then, its a race to see who can erode their mountain away the fastest. When a player successfully erodes their mountain, the game ends.

The winner is the player with the most sediment in their delta (after subtracting away any sediment that remains in their mountain)!!!

To the play the game, you need to print out a copy of the rules, the bidding row, the game cards (the card types include event, process, mountain front, and mountain type), and enough game boards for the number of players that will play. A cool rock and a cup to hold the sediment is also needed. I recommend printing the game materials (except the rules) in color, on 11" x 17" cardstock. You will also need to buy a couple boxes of Jujubees (you can eat them while you play), as they are the "sediment" used in the game. To make the game, I recommend using a paper cutter, a glue stick, scissors (for minor clean up), and scotch tape.

The zip file can be downloaded at:

NOTE: EROSION v. 1.0 is now available for download Woohoo! (5/9/08)
http://www.geomorphish.com/o_stuff/o_stuff.html

just click on "erosion" at the bottom of the page and the download will start.

My students and family members are the only ones who have played the game (hence the ultrea high ratings, they are not comparing it to Puerto Rico). If you have any questions, just ask!