Seeing as the Condesce plans to win the game/ claim the reward for herself. Could a citizen of Derse or Prospit do the same? (Spades Slick when he saw Skaia)

The Condesce wants the kids to complete the game so that she can resurrect the troll race in the new universe and rule over them. She herself cannot win the game because that would involve speaking to Echidna to claim the Genesis Frog and Echidna wouldn’t give the frog over to a murdering sociopath. Only the players can complete the session.