Tsunde Tsumi Kiss was recently released in Japan and is available through your favorite not-yet-shut-down importer. We're not sure if we'll place an overseas order, but if any of our crack TGS team of reporters finds a cheap copy, we'd happily accept the puzzler.
Loosely similar to Egg Mania (look it up, puzzle fans), Tsunde Tsumi Kiss requires gamers to build a tower. Tangram-like shapes are balanced with the DS touch screen. Players win when the tower reaches the designated height, and the rabbit-bird creature hops to the top.