Books like Diary of an 8-Bit Warrior #5
Cube Kid
Diary of an 8-Bit Warrior #5 is 256 pages, about 4 hours 42 minutes at 250 words a minute.
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How long each takes
Dragon Pearl 5.9 h 
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Allergic 4.4 h 
City Spies 7.0 h 
Small Spaces 4.1 h 
Frizzy 4.0 h 
Odder 5.0 h 
Terrible Two Get Worse 4.0 h 
Invisible 3.6 h Impossible Creatures 6.6 h 
The Last Fallen Star 6.2 h 
Tristan Strong Destroys the World 7.3 h Bar height shows length. Estimated at 250 words a minute.