Warning: Spoilers ahead! Don't read if you don't want the (kind of confusing) ending ruined!
Okay, so I've finished Seiklus. I reached 100% completion, retrieved all the "cheese wedges of power", and assembled them in the "moon temple". Annnnd, the credits roll. I guess I won, but I was kind of expecting more.
Am I a clod missing some obvious hidden symbolism, or is the ending supposed to be vague and open-ended?