Coming soon to a bookstore near you:
The Green Shell Of Couage
By Kooper Koopa
Silence Is Golden
By Link and Chrono
Hair Styling Secrets
By Cloud Rift
Time Is On My Side
By The Artist Known As The Prince Of Persia
I Died One Million Deaths
By Anonymous
The Lord Of The Rings
By Sonic T. Hedgehog
Twin Peaks by Lara Croft.
With the right cheat code, the title changes to Twin Peeks. 
What’s an Echidna? All Your Questions Answered
By Knuckles T. Echidna (It’s a spiny anteater from Australia, BTW. It’s a monotreme, which means it’s a mammal that lays eggs.)
Idiot’s Guide to Emerald Hunting
By Sonic T. Hedgehog
That Guy at the Bar: An NPC story
By Non Player Character #38
Firestarter
By Sephiroth (last name in box)Hojo
Sorry to nitpick, but it’s Cloud Strife. Though that book really does sound interesting .
When fire meets ice: The physiological effects of Antipode 3
-Lucca
Surviving Liposuction: My Struggle With Obesity
By Pac-Man
Hey! Hey! Hey! Hey!
By Navi
I’m Not Quite Dead Yet. I’m Getting Better!
By Aeris/Aerith Whatevermylastnameis
An Eternity in Limbo
–Duke Nukem
Secret Government Conspiracies: The Black Mesa Disaster by Dr. Gordon Freeman
Speak Softly and Carry a Large Grenade Launcher by the Master Chief
Kee Kee by the Lefeinan Warriors
Gulp! by Kirby
Larry Niven was a Piker
by Cortana and Spartan 117
<Ogre>NEEEEEEERRRRRD!</Ogre>
Anyhow…
Gifts My Father Lost - Prince of the Cosmos
Guide To High-Speed Exploratory Surgery - Faust nee Dr. Baldhead
Overcoming Anorexia - Dhalsim
Dhalsim Is Full Of Shit - Edmund Honda
Sex, Drugs, and Violence for Fun and Profit - Tommy Vercetti
Waiting for Vercci - Voldo
Adrenaline Is A Hell Of A Drug - Xan Greigor
A Wild Night with an Ampersand - @
Nightwatch Trailer: It’s Aeris Gainsborough. Yes, I had to look it up.
Men are from Earth, Vampires are from Hell
by Simon Belmont
How to Succeed in a Male Dominated Field
by Samus Aran
Plumbing and Saving Princesses
by Mario Mario (forward by Luigi Mario)
How to Get Your Toilets Their Whitest While Saving the Universe
by Roger Wilco
“How to Get a Head in Navigation” by Guybrush Threepwood.
Sanctuary: Personal and Property Insurance Explored
-Mephisto
Reader reviews
“Wow, after reading this I realise how important it is to be insured before getting knocked over by the millionth Munchkin!” -Bishiboshi
They Call Me Mr. Personality by Squall Lionheart
The Princess Diaries
By Peach, Zelda, Nina, ect, ect.
Rescue Me
By Peach, Zelda, Nina, ect, ect.
“Who moved my Princess? What to do when your princess is in another castle.”
By Mario - Foreword by Donald Trump.
Save the World while Barely Lifting a Finger: A Guide to Summoning Avatars, Mysterious Strangers, and Other Visitors – By Lord British (with notes from various other RPG kings)
How to Find all the Runes, Save the Princess Again, Retrieve the Giant Black Sword of Eternal Pain, and Solve Any Other Goddamn Puzzle – The Avatar, Link, Simon Belmont, and variuos others.
Dispensing Quests and Giving Clues: An NPC’s Guide to RPG Survival – by Non Player Characters #32, 64, and 120
For the badguys:
Otherworldly Heroes: What to do When a Mysterious Stranger is Summoned to Kill You – Diablo, with notes from various others.
Surviving Mario: How I Keep Coming Back After Getting My Ass Kicked – Bowser
*Lost in Stockholm: My struggle with Stockholm Sydrome *
by Princess Toodstool, Princess Daisy, Princess Zelda(and any Princess who gets caputered more then twice).
Video game Villian fortress design
by MC Escher.
Who Removed My Swimming Pool Ladder?
by Bob “Sim” Newbie (published posthumously)