Word games have often used a hex-based layout, rather than an orthagonal layout (i.e. Bonnie's Bookstore, Bookworm, Acropolis). I'm curious if any match-3 color games have used a hex layout? Hex layouts open up more possibilities, so you'd have to compensate by making the game harder in other ways (more colors, and/or more stringent matching criteria, like match-4). Then again, it may just confuse players accustomed to 4-directional matching. Any examples of 6-way/hex based color matching games?