The game does not officially support WMR but I played it on the HP Reverb with no issues.
GNOG is a highly stylized puzzle game with 9 little puzzle box levels to explore and solve. There is also a great accompanying soundtrack to follow you through the experience.
The game took me about an hour and a half to complete.
The visuals are obviously the most striking feature. It reminds me of a mix between the Youtube channel Kurzgesagt and the VR game COMPOUND, so not completely unique but highly unusual. The great thing about these visuals is that they work wonderfully in VR and are good even on a lower resolution headset due to the simplicity and vibrant colours. There is not much to say that cannot been seen from the screenshots on steam, if you like the visuals they are even better in VR. If you dont, then you will not enjoy the game.
The music is another key element to the game, with each level having an accompanying soundtrack to go with it. They are not typical songs per say but instead pleasing and uplifting beats and rhythm that fit with the box.
In terms of gameplay GNOG is a rather simple but abstract puzzle game. You need to click and drag items to correctly order them or match them kind of stuff at times however the puzzles almost reminded me more of a hidden object game.
The game has two controls - click and flip. You can click and grab or move objects with trigger or Flip the box from front to back as there is puzzle on both sides.
The only complaint here is that the Click has a "cooldown" of sorts that doesn't let you immediately grab the object again if you have not moved off of it first, which is a little awkward at times with some of the more finicky and small items.
The game is $11 in my local currency and for 1 1/2 hours of content, and there is little reason to go back and re-solve them. I don't regret the purchase but its a bit steep for some.
GNOG is a beatifically realized game from its visual style to its musical cue and I enjoyed my time with the game, however I dont think I can rate this game any higher as there is little substance or staying power to the title, a bit like a piece of candy.