Surprising a few people haven't heard of this game. Well here's a vid. There's no trailer for this game, only playthroughs, so I picked my favourite from the awesome theRadBrad, enjoy:
[Warning: some strong language]
Quote: "Considering how the map looks it might be worth to implement some sort of symmetry-feature in the editor, so that each action you take (placing a tile for instance) will be done on the other side of the map accordingly (mirrored vertically or horizontally, or both)."
Hmm... well the map is tiny so don't think I'd have to go to such lengths.
Pic of the editor:

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