Stack blocks. Manage the tilt.
Tip past 45° and it's over.
You inherit a ship already heeled over, claw it back upright by loading cargo into all the right places.
A balance puzzle that starts you in trouble. The ship begins with a permanent lean, so instead of merely staying level you must actively counter-load: drop and clear cargo on the high side to drag the deck back toward upright while the imbalance keeps trying to pull you over.
A Keel variant that starts where the others end badly: the ship is already heeled over, and the job is to load it back to level.
That inverts the family's usual shape. The other modes are about preserving a good state; this one is about recovering from a bad one, using the same cargo that caused the problem.
It also flips the instinct. Loading more onto a listing ship feels wrong, and is exactly the solution — correcting a list means adding weight to the high side, which no amount of caution will suggest to you.
Keel: Listing is an original arcade puzzle that turns the falling-block balance mechanic into a comeback challenge, a free browser game in the Keel series.