''In retrospect, men appreciate that it was a colourful apocalypse.''
-> -- ''Uresia: The Grave of Heaven'', S. John Ross

''Big Eyes Small Mouth'' is a multi-genre TabletopRPG created by the now-defunct Guardians of Order. Conceived as a system to allow people to play out games in the style of anime series, it was first released at [=GenCon=] in 1997. The name comes from a common generalization of the typical anime and manga character designs, which have proportionately large eyes and small mouths.

A number of supplemental rule books have been released, with additional rules and character creation options to provide specific advice for running games in a certain genre. For instance, the supplement ''Hot Rods and Gun Bunnies'' contains information on running a ''Manga/GunsmithCats'' or ''Anime/RidingBean''-style game, while ''Big Robots, Cool Starships'' has rules for designing {{Mecha}} and running SpaceOpera-style games. Most of the extras in the supplements were folded into the second edition of ''BESM''.

There are two other kinds of supplements produced by Guardians of Order. Stand-alone game worlds such as ''Uresia: The Grave of Heaven'' and ''Centauri Knights'', and licensed supplements based on various anime series, such as ''LightNovel/{{Slayers}}'', ''Anime/SerialExperimentsLain'' and ''Manga/SailorMoon''. Licensed supplements that were mostly or completely background information about the show's world were released with the misleading title of "Ultimate Fan Guide".

''BESM'' uses the Tri-Stat system designed by Guardians of Order, and was their flagship product for that system. Characters are defined by three statistics: Body, Mind and Soul, as well as a number of Attributes and Defects. Tri-Stat is a PointBuildSystem. A TabletopGame/D20System version of the game has also been released. GOO had a third edition of ''BESM'' ready when it collapsed. The rights were sold to the game company White Wolf, which published it (for a short while anyway; the now discontinued third edition book sells for over $100 on the Internet, but you can buy .pdfs) and now provides what support remains for the Tri-Stat system.

See also SilverAgeSentinels, GOO's superhero RPG that used a similar rules system.

----
!!This tabletop game provides examples of:

* ArbitraryMinimumRange: One of the custom variables for the Weapon attribute (which covers all types of attack abilities) is Indirect, which lets the attack strike through a ballistic arc. However, rank 1 of the variable restricts the attack from targeting less than half of its maximum range (determined by the Range variable); rank 2 reduces this to ten percent; rank 3 is the maximum and removes the restriction. SplashDamage is handled by the Area variable instead, so there may not be any practical reason for an attack to have a minimum range.
* AwesomeButImpractical: The laughably weak Alternate Form attribute. Without installing some kind of drawback, you will be one point per rank in AF more powerful than if you'd just bought the powers for your native form and called it good. Meaning that with two ranks of Alternate Form, you can afford +5 HP, +2 ranks of armour, or a single combat technique. Also, there ''has'' to be some reason you don't just drop into Omnikill Mode and stay there, even if it's just social.
** The template for the MagicalGirl, one of the archetypes you'd most expect to use Alternate Form, instead assumes that her ''mahou shoujo'' identity is her main one, and simply uses a single level in the Alternate Identity attribute (which only costs two character points in-game) for her civilian identity.
** The Alternate Form actually has quite a bit of use in the right situation, it's just abstract. Technically there's no reason you can't have an Alternate Form with almost entirely different stats, defects, and attributes. Think of the difference between The Hulk and Dr. Banner. It basically allows you to have two characters tag team.
* BadassDriver: The Hot Rod template.
* BareYourMidriff: The amount of art that exhibits this would be surprising were it dealing with any other genre. Even hardcore mercenaries show up with their midriffs bared.
* BiggerOnTheInside: The Dimensional Portal attribute uses this trope by name.
* CatGirl: One of the sample templates, and the creation of a space opera catgirl character was used in third edition as the chargen example.
* DemonSlaying: The Demon Hunter, one of the sample templates, who is dedicated to killing the denizens of the hell dimension of Bazaroth.
* EvolutionaryLevels: The Homo Psyche template is a human who has awakened to his or her true {{ps|ychicPowers}}ionic potential, becoming the next step of human evolution.
* {{Fanservice}}: About half the art.
* GadgeteerGenius: The Tech Genius template.
* TheGreys: Yep, they're a playable race in this game.
* GunFu: Combat Techniques that can be used with ranged weapons can create a gun-fu character quite easily. Indeed, Hot Rods and Guns are just one of the many subgenres of anime.
* HumongousMecha: The Giant Living Robot template. The Mecha Pilot template also gives you a lot of item points with which to design one of these for your character to pilot.
* IdolSinger: As idols are popular in anime and video games, you can bet they've shown up here.
* MagicalGirl: One of the templates available to players.
* MinmaxersDelight: For attributes, Extra Actions. Even the book recommends only allowing players up to two levels in this unless they're supposed to be vastly more powerful than humans.
* {{Mons}}: The Companion attribute can be used to design your own Mon if you have the Pet Monster Trainer template.
* {{Ninja}}: Yep, they're here too.
* OneStatToRuleThemAll: If you can have only one stat at 8, for God's sake make it Soul. Body + Soul determines your HP; Mind + Soul your Energy Points. And the most common roll based off just one stat is Soul-based anyway.
* OrdinaryHighSchoolStudent: The Student template, which includes twenty points worth of Unknown Power to ensure that their lives will be anything but uneventful.
* ResurrectiveImmortality: This is what the Reincarnation attribute does. The various levels determine how long it takes for the character with the attribute to come back after being killed, and how easy or hard this is to stop.
* {{Samurai}}: No anime-inspired game would be complete without these.
* {{Sentai}}: The Sentai Member template, which is at its best when fighting alongside the other members of the team, just like in a sentai show.
* SkeletonKey: The template that bears this trope's name has the power to open any world gate in any dimension in the Anime Multiverse as well as being able to unlock anything and even destroy any world gate. For this reason, they are very sought after by those who know of them.
* SuperMode: The Alternate Form attribute (but see AwesomeButImpractical above).
----