Sometimes, fights have rules. These rules can be manipulated through things like the use of preposterous [[LoopholeAbuse technical clauses]]. Other times, however formal things may be, the fighting doesn't actually have any rules at all. Last one standing wins. Use anything you can think of to make it happen.

See also- TryingToCatchMeFightingDirty, ThereAreNoRules.

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!!Examples:

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[[folder: Anime ]]

* Milly in ''CodeGeass'' loves organizing highly elaborate contests like this with absurd high-stakes prizes. Once, it ends up going a little too far when one character attempts to use a mecha to win one.
* Played with for comedy in an episode of ''Anime/FullMetalPanicFumoffu'' when the Karate Club's idea of "no holds barred" combat comes into violent conflict with Sousuke's. Hint: the Karate Club's definition doesn't include guns, tear gas, or hand grenades.

[[/folder]]

[[folder: Film ]]

* ''Film/ButchCassidyAndTheSundanceKid''
-->'''Butch:''' No, no. Not yet. Not until me and Harvey get the rules straightened out.
-->'''Harvey:''' Rules in a knife fight? No rules!
-->'''Butch:''' ([[GroinAttack kicks Harvey in the 'nads]]) If there ain't no rules, let's get started. Someone count 1, 2, 3, go.
-->'''Sundance:''' 1, 2, 3, go!
-->'''Butch:''' (knocks Harvey out with a two-handed punch)
* ''Film/MadMaxBeyondThunderdome''. There is only one rule of Thunderdome. When two men enter, one man leaves.
* ''Film/{{Lionheart}}''
* ''Film/NoHoldsBarred'' (Imagine that)
* ''Film/XMen1'' has an example in the cage fight that introduces Wolverine, again toyed with a little: "Don't kick him in the balls." "I thought you said anything goes." "Anything goes, but he'll take it personal."
* In the 1975 version of ''Film/{{Rollerball}}'', the championship match basically boils down to this.
* ''Film/{{Serenity}}'', the final fight between Mal and the Operative.
* ''Film/BestOfTheBest2'' movie indulged in this and had one member of the martial arts team killed in such a match, pulling his friends into it too.

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[[folder: Live Action TV ]]

* On ''NewsRadio'', Joe and Matthew compete in an Ultimate Fighting match for charity. Matthew's strategy: tickling.

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[[folder: Sports ]]

* The very first few MixedMartialArts events under the UFC were billed as having "no rules," but in reality there were prohibitions against biting, gouging and fish-hooking. Even still, this left quite a lot of "dirty" moves left open, such as groin attacks and hair pulling. Modern MMA has a strict rule set, but still has a lingering reputation for being "no holds barred."

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[[folder: Professional Wrestling ]]

* No holds barred matches, obviously. Goes by many other names as well, like Falls Count Anywhere, No Disqualification, Hardcore, Extreme Rules, ect.
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