Checkers. You start with only one piece type and they go to the trouble to make all those squares and you only use half of 'em.

This is the last ad that had me paying full attention when it first came on. It was ran during the football finals season and they made two cuts, one for NRL and one for AFL. https://youtu.be/gbMeKMkE_mk

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If I remember right, there was a spam detector bot or similar which I’m sure was third party and it either went off altogether or the project was suspended after accessing the API was going to come in.

That got stuck in another canal, not the panama one. Maybe Suez?