An episode on Mercury would be good. I find it a bit pointless to play, but it's fun for a quick dip in dip out. Since it changes regularly it tends to stay fairly fresh. I find myself playing it not for the score but for just a quick and simple dive without all the frills.

Regarding yours and Andrew's discussion on cardinal/diagonal/hex  pillar dancing is irrelevant. In a cardinal movement system, if you are a multiple of two tiles away you will always be hit first unless you can perform a wait action. Thus if you are an odd number of tiles away you will always hit first.
Therefore: if you only have cardinal movement and no wait action, your distance to one monster is irrelevant. It is whether the distance is a multiple of 2 that matters. Try it for yourself on paper.
With diagonal movement you get to jump back and forth each side of the binary system. Distance now matters.
I thought that with hex you would have the same issue with cardinal grid movement, but on trying it out on paper I'm not getting the same result. I can spend a turn but still be the same distance from the enemy  thus distance does matter in hex, yet it doesn't have the binary system that grids impose.
Not that the binary system isn't fun. But it does have a big impact on AI and on survival.
edit: multiple of 2 not factor of 2