To be honest, I have always found mere concept of erotic role-playing table games ridiculous. It seems quite obvious that such a game, being started, would almost immediately devolve into just an erotic role-playing game without table and dice, and - further down the line - hopefully, an orgy.

Oh, table and dice rolling may be involved, by all means - but it would be involved in quite the different kind of erotic role-play, yanno?
And, given the immense scarcity of people actually capable of participating in orgy without copious amounts of intoxicants to numb the burning pain of personal inadequacy, or unquenchable need to satiate demonstrably unhealthy obsessions... Well, if you are already a part of a group capable of carrying things through to logical outcome, the last thing you'll want to waste your time on is filling out charsheets. Well, unless you are capable of extracting pleasure from encumbrance calculations - but...
Tastes in crayons differs, I suppose.

Don't get me wrong - drunk/high TRPG can be extremely fun, but one drunk session of even the much maligned FATAL could give so much more reasons for silly laughter than any of thouse. However, adding erotic angle into the mix tends to create a bifurcation point - you either choose to continue a role-playing game and ignore the erotics, or focus of erotics - and damn all thouse pesky game mechanics.

Which brings to - the complexity problem.
You may run a D&D or Pathfinder session in the world of Corruption of Champions because framework is so sturdy, and instruments are plentiful. All you'll need is enough booze/toke/inborn crazyness to actually write/lead/play such a campaign.
But thouse ETRPGs are almost bare bones - and while lust-ridden perversons of naked flesh could not possibly hold a candle to the high eroticism of naked bones, there is always too little of actual 'game' for me in thouse 'role-playing games' - be it Kah's F.A.P.P., Gideon's Land of Luste, or that one highly unofficial AD&D supplement widely known in very small circles. And if I'll ever want to play a tactical-scale wargame - I will play a godsdamned wargame then, up to and including a party of chess with buttplugs instead of pawns.

Hence, all thouse games interest me mostly from purely academical standpoint. I'm, mea culpa, quite fond of worldbuilding, you see, and not a big fan of the whole 'erotic table role-playing games' shebang.

But enough of this TED-talk - have at you!

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This is Corebook extension, with new mechanics, options, and such.
Superseded by current 3rd edition of Corebook.

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Prime writer and designer: Kah

* FurAffinity - https://www.furaffinity.net/user/lemuel
* Patreon - https://www.patreon.com/Kah

Game sites

* Fapp Database - http://balls.horse/Fapp/index.html
* Fapp shopp nexus - http://fapp.pbworks.com/w/page/6380467/FrontPage

Rulebooks

* Rulebook (corebook 1st ed., largely obsolete by now)
* Advanced Fapp (extension of corebook, putting a little bit more 'game' in this game; free)
* Fapp Primer (rules primer; free)

Expansions (in order of release)

*) Rotgut Rampage (initial release)
1) Balls Deep in Duat
2) Ass Effect
3) Hard Heroes
4) Landsmeat
5) Endgame
*) Filth Folio (free supplement)
6) Monster Balls
*) Zanthrone (free supplement)
7) Dragon Layer
8) Yiff in Hell
9) Fuck University
10) Cyberjunk
11) Cursed Cumpendium (nope)
12) Hyper Space (niet)