My wife and I have spent the past weekend and few work nights working our way through the delightful world of the UnderGarden. From the visuals to the enchanting musical accompaniments the game just charms you, and is a near perfect wind down game. At first glance we were reminded of Flower thanks to the pollination gameplay, but there more to do in each level. Crystals to be located and musicians to be rescued whose music cosmetically warp and shape the flora of the UnderGarden.
I was a bargain at 800MSP, at 400 it would silly not to. 15 levels of play in the main game, plus and additional 2 if you want to the DLC (140MSP at time of writing) will leave you feeling happy and relaxed.
A great couples game. But don't discount it for single player fun also.