Leaderboard actually works! Press space to show and hide it. The (Single) label just means that a single person is only allowed to have one score on the leaderboard at a time. Other version: https://scratch.mit.edu/projects/1104596752/ Just go into the portal you think is lucky! Portals are randomly set every time. On the top left is your current streak. I thought that the first game was too hard, since it's a 50% chance of losing, so I added another portal and now it's a 33.3% chance of losing. The color of the portals does not affect anything.
Thanks a lot to "kriblo" and his "Santa's Hat" game for the cloud Leaderboard engine. I've tried other times to put one into my games, and it hasn't worked until now. "Santa's Hat" game found here: https://scratch.mit.edu/projects/592880438/