[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/WWF_No_Mercy_9499.jpg]]
[[caption-width-right:200:Dig-dig-diggity, dig-diggity-dog...]]

''WWF No Mercy'' is a ProfessionalWrestling video game for the UsefulNotes/{{Nintendo 64}} that was released in late 2000; it was the last licensed wrestling game made by famed developer AKI (now Syn Sophia), who had previously made the ''Virtual Pro Wrestling'' and ''WCW vs. nWo'' series along with ''[=WrestleMania=] 2000'' -- and would go on to make the UltimateMuscle/Kinnikuman games, the ''VideoGame/DefJamSeries'', and [[GenreAdultery two SimCity games]] for the UsefulNotes/NintendoDS. It was also (along with ''WCW Backstage Assault'') the last wrestling game for the N64/PSX era of gaming, which happened to coincide with the end of wrestling's Wrestling/MondayNightWars era (and the WWF's Wrestling/AttitudeEra).

''No Mercy'' was set at the height of the Attitude Era, and fifteen years later is something of a time capsule to that period in wrestling history. It was the first game in the series to include a career mode more in-depth than winning a gauntlet of matches against the computer. Players could select any title division and follow storylines that actually happened in real life, with the storylines branching and diverging based on wins and losses, and player decisions. It also featured a gigantic roster bolstered by many hidden characters, though completely excluding Wrestling/TheBigShow [[note]]Show got in so much trouble with WWF management while the game was in development that he was entirely removed from it; his position in the storylines was taken by [[Wrestling/StevieRichards Steven Richards]][[/note]]. It also had the largest selection to date of possible match types; this combined with a relatively shallow learning curve contributed to the game's multiplayer feature. On the downside, ''No Mercy'' suffered from a major bug - the first few production runs of the game shipped with a defect built into the game's code that wiped all the save data after a set amount of time; as a result, the bug's in nearly every known ROM of the game.

The easily-hackable nature of N64 [=ROMs=] has given it a still-active modding community, with more than a few e-feds still using the game to sim matches featuring either modern day wrestlers or CAWs.

THQ published spiritual sequels to ''No Mercy'' for the Gamecube in ''WrestleMania X8'', ''{{WrestleMania}} XIX'' and the two ''Day of Reckoning'' games. AKI's ''Def Jam'' games -- especially ''Fight For New York'' -- are also considered spiritual sequels, since the engine used for those games was remarkably similar to the ''No Mercy'' engine.

!!Tropes used:
* ActionGirl: Every playable female. To a lesser or greater extent depending on how good at wrestling they were in real life, the women went through intense {{Xenafication}} (with the exception of Chyna, and only because she didn't need it). Unlike ''Wrestlemania 2000'', which gave female characters minimal stats and dumbed down movesets, ''No Mercy'' went the other direction and gave the women [[RuleOfCool cool looking moves]] - e.g. Wrestling/{{Trish Stratus}} using the koppu kick[[note]]this game came out when she was still in her "so bad she can botch a catfight" stage[[/note]], or The Kat using an MMA style achilles lock. Wrestling/{{Lita}} in particular was given a high flying stat of 4, which made her a decent character to play competitively. And the game allowed intergender competition, which meant that any of them could compete for and win the World Championship.
* AnnouncerChatter: Averted in that matches don't feature actual commentary, and the only voice heard is that of the referee. The voices of Jim Ross and Jerry Lawler can be heard in the intro.
* AIRoulette: For computer-controlled CAWs. Actual wrestlers are in some cases programmed to behave like their real life counterpart. But CAWs will do any moves marked 'favorite' at random, and they are ''obsessed'' with doing corner finishers. Irritatingly, No Mercy is the first game in the series where you had to have a corner finisher. For whatever reason, CAWs also never taunt except for when they're activating their limit break.
* AscendedExtra: Weirdly enough, your created characters can and usually will be more powerful than the RealLife wrestlers, since you can give them all the best advantages (i.e. highest speed, submission expert, highest endurance etc.) and utilize all available Attack/Defense points, which, in the interests of balance and realism, even the most powerful main eventers don't.
* AWinnerIsYou: Unlocking every path to the belt in Championship Mode is hard and takes a lot of time, ''especially'' the World Heavyweight Title. All it does is make the victory text crawl at the end a little different, and that doesn't even take effect upon finishing the last branch; you have to get 100% and then play one more time to see it.
* BadassGrandma: Moolah and Mae Young in this game especially. If you choose to play as Moolah and Mae in Tag Team Championship Mode, Paul Bearer and ''Howard Finkle'' go BadassGrandpa and take their place in the storyline.
* BoringButPractical: The move where you're outside the ring, your opponent's inside, and you reach in and pull them out (or if they're facing away from you, trip them) isn't blockable or reversable, and even on extreme difficulty the computer's AI isn't very good at avoiding it. Exploiting this is helpful to overcome the computer ones it goes into Reverse Everything Mode.
** The weak grapples on the A button are the most basic moves, but can't be reversed, so they're also useful (If you can manage to actual grapple the computer without them reversing in the first place, that is).
* [[{{Bowdlerise}} Bowdlerize]]: When the PAL version of the game was updated to remove the deletion glitch, it also removed visible blood.
* CharacterCustomization: Unique in that you could even edit appearances of ''in-game Superstars'' like you would a created Superstar. This means you can turn an in-game superstar into a completely different wrestler - and then this in turn extends to the championship mode ''and'' the cinematic intro! Yes, efedders and CAW addicts, you can "paste" your [=CAWs=] over top the real superstars and play championship mode with an entirely created roster.
** Just pray your character isn't a MaskedLuchador because the there are NO lucha libre style masks of any description in the game. The only masks are Kane, Mankind, and a full-face "Phantom" mask.
** It should also be noted that you can only edit the default roster's appearance, not their movesets. To edit movesets you need a Gameshark and A LOT of time to enter all the codes.
* ComebackMechanic: Wrestlers have a invisible health bar that when depleted a sufficient amount triggers a comeback mode. Said comeback mode includes: radically increased spirit gain, submission moves grant continuous spirit, and an increase reversal rate. Contrary to popular belief, this isn't limited to the AI; players also have access to this.
* CosmeticAward: Buying the Ho in the Smackdown Mall takes an obscene amount of money. The Ho is actually four different females not even modeled after actual women that accompanied The Godfather, and her stats are rock bottom, making her useless both as a storyline character or competitive character.
* DummiedOut: Unlike ''[=WrestleMania 2000=]'' and ''[=WCW/nWo Revenge=]'' before that, entrances are limited to just the stage taunt - the walk to the ring and the ring taunt were cut. This was because the game was getting too big for the cartridge to handle and rather than make the unpopular N64 Expansion Pack required to play they cut some memory-draining bells and whistles.
** The Japanese version featured a shootfighting mechanic, where the B button on a strong grapple allowed you to perform a custom combo. To be fair, the shootfighting had been dummied out of Wrestlemania 2000 as well, although it could be seen in ''WCW Revenge'' (most notably in Goldberg and Wrestling/UltimoDragon's movesets).
* FanDisservice: Since this game doesn't care about wrestler gender, you can play as a man in the Women's Championship story. There's a swimsuit competition in the story. He ''will'' put on the skimpiest bikini in the game and participate in it.
* {{Fanservice}}: Many of the swimsuits from the bikini contest at Royal Rumble 2000 were included in the game as outfits. The swimsuit competition even appears in the game as part of the Women's Title storyline. The opening cinematic also has fanservicey shots of Terri Runnels and Debra.
* GameBreakingBug: The [[http://nintendo.wikia.com/wiki/WWF_No_Mercy#Memory_Issue memory glitch]] could result in all of your saved progress going poof without warning.
** Newer versions of the ROM eliminate the save glitch, only to replace it with another, arguably worse one in Championship mode, which causes wrestlers to lose their lock-on at random points during the match. Trying to use any grapples, submissions etc. during this time will cause the wrestlers to hang. Try getting through more than one match at a a time outside of Exhibition mode, we dare you.
* GroinAttack: This being a wrestling game, they are plentiful, and are even punctuated with a bell's '''DING!''' when a Superstar is struck in the groin.
** Groin attacks are also [[TheatricsOfPain sold]] for a longer period of time than any other non-grapple move, and characters groin-stunned can't reverse attacks.
* GuideDangIt: No Mercy neglected to include instructions in the manual on how to control a guest referee, and the referee actions were performed through the otherwise unutilized right arrow button. Checking for a submission is unintuitive as well - the button has to be pressed once so the ref gets in position to watch, and then pressed again while the wrestler is in the process of tapping out.
** The game features a limb-specific damage system and a fairly dynamic balance system (Which were later used in the Smackdown! games) - but there's no indication given anywhere in the manual or the game that this is the case. The onscreen Attitude meter is pretty much just a spirit gauge and only gives a vague idea of the progress of the match - it's quite possible to have your character submit or be pinned seemingly out of nowhere, or to pin someone whose meter reads "DANGER!" and have them kick out on a 1-count.
* HeadSwap: Or more accurately, model swap. Each character had four different models that could be selected. In a few cases, such as [[Wrestling/TAKAMichinoku Taka Michinoku]]/Funaki and Mae Young/Fabulous Moolah, the latter was made into an alternate appearance of the former. And in the case of Taka/Funaki, the moveset the character was given was a combination of the movesets the two wrestlers used in real life.
* LoadsAndLoadsOfCharacters: The game features an impressive roster that's bolstered by unlockable characters like {{Vince McMahon}} and even Wrestling/AndreTheGiant. Headshots and create-a-wrestler pieces were included for a few characters who didn't get included in the game, including Wrestling/{{Raven}}.
* MultipleEndings: Considering the story keeps going whether you win or lose there are a lot of them. Also matches where you're not even personally involved in the case where you are the special guest referee.
* PeriodPiece: Becoming one of the Attitude Era. The championship modes follow various storylines that actually happened quite closely, and the [=CAW=] feature reflects how much more popular long hair was than short hair at the time. More negatively, the lack of Lucha masks reflects WWF's belief at the time that most fans weren't interested in masked wrestlers and cruiserweights.
* RealLifeWritesThePlot: The WWF Championship mode follows the actual story lines of Wrestling/TripleH, [[Wrestling/StoneColdSteveAustin Steve Austin]], [[Wrestling/MickFoley Mankind]], [[Wrestling/DwayneJohnson The Rock]], or Wrestling/ChrisJericho depending on what path you take.
* RingOldies: Vince [=McMahon=], Linda [=McMahon=], Gerald Briscoe, Pat Patterson, Mae Young, Jerry Lawler, and Paul Bearer.
* RubberBandAI: One of the most notorious examples of the trope. If you beat the computer player up too much, especially on the higher difficulties, it will suddenly start reversing ''everything'' and gaining spirit at warp speed. Players get all of these advantages as well in the same situation, but the reversal rate isn't as high.
* ShownTheirWork: The difference between No Mercy and the previous Wrestlemania 2000 really is amazing. The championship career storylines are accurate abridged retellings of the hot feuds of the past year such as the [=McMahon-Helmsley=] era, and this was one of the games that is greatly improved by having branching storylines depending on your decisions and win-loss record. The midi music is amazing, with full and accurate themes for several wrestlers and really impressive versions for everybody else, and the moves, taunts and outfits are pretty accurate missing only a few months before the game's release.
* TakeThat:
** [[RingOldies Mae Young and The Fabulous Moohlah]] were given The Jackhammer as a finishing move. The Jackhammer was the finishing move of {{Wrestling/WCW}} star {{Wrestling/Goldberg}}. They were also given Wrestling/{{Sting}}'s Scorpion Death Drop.
** Wrestling/{{Ric Flair}}'s move where he'd take a chop, face plant, beg for mercy and then poke the opponent in the eye was called the Old Man Flop in the game.
** This game took place during the time period when The Stooges (Pat Patterson and Gerald Brisco) were using Wrestling/{{Hulk Hogan}}'s taunts and theme music, and this was included in the game.
* TookALevelInBadass: [[Wrestling/StevieRichards Steven Richards]]. In WWF at the time he was mainly a managerial figure who relied on his stable to do his dirty work for him. But due to the aforementioned issues with Big Show being removed from the game, Richards was put in his place in the storylines as a main event caliber wrestler.
* {{Underboobs}}: One of Terri's outfits features these. She'd worn the outfit in RealLife. During the cinematic intro, the camera does a slow pan up her body at an angle while she's wearing this outfit.
* WouldHitAGirl: One of the last matches for the Women's Title has Triple H fight you for it. The game doesn't restrict your character selection either - you can play as a female wrestler and win the World Title. Or you can play as a male character, beat up a bunch of girls like a jerk and win the Women's Title if you prefer.
** In the Tag Team storyline, your very first match has you fighting Mae Young and Fabulous Moolah. Although to be fair, they challenge you and not the other way around.