tl;dr

~Fascinating
~Infuriating
~Rewarding
~Insightful
~Random
~Fair Value
~Steam Trading Cards
~Steam Achievements
~8/10 for puzzle genre

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You will not know what to do in this game until you get frustrated and start doing strange things - or read a guide, of which there are plenty available.

Once you start to understand some of the early learning (basic unlock codes, for example), playing with the various levers and buttons that can be found, and looking for secret hints that lead to questions you've not yet encountered that lead to still more puzzles to be discovered becomes an involved pursuit.

If you like puzzle games and enjoy the click-interface (as opposed to precision pixel-placement or rotating puzzles to see where pieces fit, for example), then this game may suit you.

$5 is about the highest I'd go for this one and that's a bit high in my opinion, but if you can catch it on sale (right now it's $.99) it's a great evening's worth of entertainment that you can enjoy with one hand on your mouse, and the other on your soda/beer/cat/other.

Very nice work, Four Quarters & BulkyPix.