The main reason I've long given this Red Company-made platformer the cold shoulder: In current verbiage, it's because PC Genjin 3 feels a little to much like an "expansion pack" for PC Genjin 2.
PC Genjin 3 tries to differentiate itself from its predecessors in at least one area, thankfully: Its instruction manual (the cover of which can be seen in the scan below).
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How so? Well, for starters, PC Genjin 3's manual is about twice as long as PC Genjin 2's. Also, PC Genjin 3's manual features a comic that runs across the bottom of pretty much every page. Because I don't understand a word of Japanese, I can't say if it's a good comic or not. Regardless, it features a number of nice drawings, so at least there's that.
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The rest of this manual's many pages, though, are filled with your usual assortment of instructions ("here's what the I and II buttons do," "here's what happens when you eat a giant hunk of meat," etc.) and illustrations.