Great concept, but a audio on/off would be nice, and I think some of the matching mechanics aren't exact: there were a couple times where I couldn't figure out how it match with the overlaps, but it shifts away to fast to get a screen shot.
Now, this looks like a great game, but not for me. Also, this is a point and click adventure game...you should probably label it as such. The RPG part could be debated.
Excellent mechanics, but the interface is frustrating. The menus are initially irritating, having information blocks spread across multiple tiles (coloring grouped tiles should be an easy fix). And the accidental click was rage ensuing. Intuitively I'd want to hold the mouse button down to light up tiles.
 "XYZ"){kind=icon}
 "The King's League: Odyssey"){kind=icon}
 "Layer Maze 4"){kind=icon}
 "Avant-Garde"){kind=icon}
 "HEXEP"){kind=icon}
 "Cloud Wars"){kind=icon}
 "Jahooma's LogicBox"){kind=icon}