Grimind is a great game. Great atmosphere, great visuals, sound, etc.
The gameplay itself is rather simple, but with the added aspect of terror. The game slowly builds on this as you progress and, I can admit, it was a bit scary to play at times (especially when you got little creatures running after you making horrid noises). They certainly got that aspect of the game down.
On top of the already fantastic gameplay, the game also presents fluid controls, aside from a design flaw that forces a controller user to use the second analog stick as a cursor, which can be a tad annoying at times (rather, all the time). The lack of real controller support was very disappointing.
Overall, Grimind is an excellent game. Definitely recommended, but do remember to play with headphones (and in a dark room, preferably).