Fixed a bug in Campaign Mode where clearing a single level could advance the game by several levels at once.
Because scores scale with the level number, this also inflated Campaign Mode scores — some of the very high entries on the campaign leaderboard came from this bug rather than from real play. The scoring rules themselves are unchanged.
What's fixed:
• Clearing a level now advances exactly one level.
• Campaign scores now reflect real progress again.
Thanks to everyone who reported unusual leaderboard numbers — that's how this was found.