Alien City piecepack

[trevorld]

@tinfoilhatter pointed out on FB that instead of buying/building a standard piecepack that can play hundreds of games many abstract gamers build custom Alien City pieces optimized just for that game which can't be used to play other piecepack games. It may be nice to create a piecepack better optimized for the Alien City experience that can still be used to play piecepack games.