Kingdom Builder: Marshlands, the third boxed expansion for Kingdom Builder designed by Donald X. Vaccarino, builds on this already exciting world of skill acquisition and land dominance.

What makes the Marshes expansion unique are the bonus abilities. For the included new abilities, a bonus ability is unlocked if you manage to collect that ability twice. For example, if you have collected the Rider ability, you may move one of your pieces into an adjacent land hex. If you collect a second Rider, then in addition to getting to move twice via your Riders, you can also jump one piece in a straight line to the first empty land hex.