The major change in the rules between Oregon Hearts and standard hearts is that in standard hearts, one must follow suit to the first card played to a trick, but in Oregon Hearts, one must follow suit (if possible) to the last card played to a trick (so far). Thus, the suit being "played" can change several times during a trick.
Each heart counts as one point; the
If one fails to take any points on a hand, one takes 25 instead.
Hearts may not be led until broken; the
Passing is unnecessary.
If anyone shoots the moon, they win. I've never seen anyone come close.
Oregon Hearts can be played with more than 4 people, either by adding suits or with smaller hands. Double-deck Cancellation Oregon Hearts is amusing, but is not a very good game if one keeps score. It's nearly impossible to maintain a lead.