Video Game / osu!

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osu! is a freeware rhythm game made by Dean "peppy" Herbert, based on the gameplay of the Ouendan and Elite Beat Agents series of games for the DS.

Game levels, called beatmaps, are created and submitted by users via a Level Editor. These can later be refined through community modding if the creator requests it and gets ultimately approved by members of the Quality Assurance Team and Beatmap Nomination Group.

Ranked beatmaps give Performance Points (or pp, for short) after being beat, giving more pp the better you did in the map, and they also get a scoreboard featuring the best scores done in it. The beatmaps also give experience points based on how you much you scored in them, but the levels do nothing and are ultimately cosmetic.

Besides the Ouendan/EBA gameplay, osu! includes three additional game modes: one based on the Taiko no Tatsujin series, one based around the gameplay of beatmania IIDX / O2jam and another revolving around catching fruit.

Apart from Solo mode, players can compete in all four modes in online multiplayer matches in rooms which can contain up to sixteen players, in single or team battles, in order to get the highest score, accuracy or combo possible, or play beatmaps together by taking turns between combos, depending on the room settings. In osu!mania, two players can play locally using the same keyboard.

Its website can be found here and the game can be downloaded here.


This game provides examples of:

  • Anime Theme Songs: Around 1/3 of all the ranked maps are these.
  • April Fools' Day: The jokes each year revolve around changes in the game's genre ("Touhosu", a Touhou/osu! hybrid), gameplay ("osu!core", where the songs in every beatmap had their pitch and speed increased), staff (unexpected demotions or promotions), and beatmaps (pretending to approve and praise an extremely poorly made beatmap).
    • Also, some of those jokes have ascended. osu!core became a permanent available mod called Nightcore, and Touhosu! has been confirmed as in development by peppy.
  • Call a Hit Point a "Smeerp": The currency of this game is called "kudosu", and is earned through modding unranked maps.
  • Crossover: The beatmap for Queen's Don't Stop Me Now is based on the plot of a Fan Fic which combines Phoenix Wright with Elite Beat Agents. It's as awesome as it sounds.
  • Determinator: A player can become this if they're trying to pass, get an FC (Full Combo), or enter the Top 50 on a beatmap, especially if the beatmap is pretty difficult. If they lose a rank in the top 50, don't expect them to quit playing for hours until they beat the player who beat their score.
  • Fake Difficulty: Is HEAVILY discouraged nowadays, and maps with it have a very low chance of being ranked. Using tricks like low (or high) Approach Rate, high HP drain, etc., are no longer acceptable in the Ranked Beatmaps section. In addition, some very specific mapping techniques are not allowed to be ranked due to being very confusing and frustrating for players. A list of these can be found here
  • Fun with Acronyms: GMT (Global Moderator Team), QAT (Quality Assurance Team).
    • Also some, teams that don't exist anymore, like MAT (Modding Assistance Team), BAT (Beatmap Appreciation Team).
  • Game Within a Game: Taiko, Catch The Beat, and osu!mania modes.
  • Grade Inflation: As in Ouendan and EBA, S comes after A, but a perfect performance in osu! earns the player an SS rank. An SS achieved under the Hidden and/or Flashlight mods has a separate sprite (alternate colouration in the official skin) and commonly referred to as "SSH".
  • Idiosyncratic Difficulty Levels: Beatmappers can name the difficulties of a beatmap set into whatever they like. However, Non-Indicative Difficulty names on a beatmap set's lower difficulties render it unrankable.
  • Harder Than Hard: Many beatmaps have an Insane difficulty, and some even have a difficulty above Insane (officially named "Expert").
    • "Oni" and "Inner Oni" respectively for Taiko beatmaps.
  • Interface Screw: The Hidden and Flashlight mods.
  • Level Editor
  • Mascot: Pippi.
    • Yuzu for Catch the Beat.
    • Maria for osu!mania.
  • Marathon Level: There are a handful of "marathon" beatmaps, commonly ranging between 10-15 minutes in length, with some even longer:
    • paraparaMAX I, at 36:17.
    • Within Temptation's entire album The Unforgiving in one beatmap, the current record holder at 52:57.
    • In addition, there are several unranked maps that pass the 100 minutes mark, also some of them are over Insanely difficult!
  • Nintendo Hard: Thought Elite Beat Agents and Osu! Tatakae! Ouendan were hard? You haven't seen anything yet. The hardest songs from Ouendan/EBA are approximately 3.5 stars on the revised star rating scale released in mid-2014, and these games are already Nintendo Hard on their own. The hardest songs on Osu takes this Up to Eleven, with revised star rating exceeding 7 stars, such as "Can't Defeat Airman". Such crazy streams and jumps do not exist in the original Ouendan/EBA games.
    • A common joke between pro players (rank 1000 or less) is saying they have problems passing "Can't Defeat Airman", there are a few beatmaps where almost all players have to struggle, such as "xi - FREEDOM DiVE (FOUR DIMENSIONS)", or "IOSYS - Utage wa Eien ni ~SHD~ (TAG4)". (Though that one is meant to be played by four players simultaneously.)
    • Prior to the mid-2014 update of difficulty calculation system, original star rating scale could not keep up with the escalating difficulty of the newer beatmaps with topped off at 5 stars.
      • There are the few maps that completely break the old star rating system, such as xi - FREEDOM DiVE, where the hardest difficulty is rated at around 2.5 stars, which is the average Easy difficulty rating, and the other, also insane+ difficulty is rated at 4.5, which is a typical Hard difficulty. Certain maps with high difficulty settings go ABOVE the 5.00 limit (although not by much).
      • Adding on, there are several joke maps with star ratings into the negative and beyond, even reaching up to -infinity/5 in some weird special cases.
    • For osu!mania 4-key, there are some maps that, while they would only be maybe a 6 star map in osu!mania, they could go up to 20-footers in Stepmania (like That Was Too Slow [4K MX] or miracle 5ympho X [Black Another]). An 8.5-star map might be around a 26-footer or harder, something like Kinetic or UKF Dubstep VIP in Stepmania.
  • Non-Indicative Name:
    • The Double Time modifier multiplies the speed of the song by 1.5x.
    • The Half Time modifier multiplies the speed of the song by 0.75x.
  • One-Hit-Point Wonder: The following modifiers do not increase score, and considered to be convenience modifiers for players who are going for a (perfect) full combo run to quickly restart the beatmap:
    • In the Sudden Death mod, you fail the beatmap you're currently playing if you screw up once.
    • With the "Perfect" mod, you lose instantly if your accuracy goes below 100% at any point.
  • Positive Discrimination:
    • One reason is that Cookiezi, one of the top osu! players, is Korean.
      • In fact, even after he quit osu in May, he still was on top of the leaderboards until early September.
      • When he came back later during 2012, it took him about a week to recover the first place position.
    • In Taiko mode, 2/3 of the first 100 ranks is occupied by Japanese players.
    • One of the best osu!mania 4-key players is from Norway: Staiain.
  • Power Creep: To a certain extent. The players are getting better, of course, but there are also more and more maps that can be "farmed" to earn PP. At the end of 2014, the highest PP score was 558. At the end of 2015, it was 667. In the first month of 2016, there have already been five scores that have been higher than that.
  • Rage Quit: A common practice to avoid submitting and saving low accuracy scores, though that doesn't work anymore.
  • Rhythm Game
  • Scoring Points: There are two scoring systems: the "PointValue x (combo + ConstantA) x (ConstantB)" system used in the source games, and the "pp" system (which gives a score according to how impressive the play was). There are also scoring systems that are exclusive for multiplayer matches, such as accuracy (percent-based system, which is the average accuracy for each note, being a 300 a 100%, a 100 a 33.33%, a 50 a 16.66% and a MISS a 0%), and Combo (the player with the biggest combo the moment when the map ends wins). In a multiplayer match, you can choose which system to use for ranking.
  • Self-Imposed Challenge: Using one or more of the difficulty increasing mods and/or going for SS (perfect) runs.
  • Stylistic Suck: NotShinta's cover of Imogen Heap's Aha! is awful. Yet so very good. Notable for being the beatmap with the lowest user rating on the site.
    • The Jarto series is based on this trope, having an... odd narrative told through Stylistic Suck storyboards.
    • Spinsmith also has his series of bad song covers.
    • ztrout is like Aha?, except it came first.
  • Super-Deformed: Miniature versions of Pippi, Ryuuta, and J can be found on the homepage and Catch The Beat.
  • Up to Eleven: Somewhat literally. There are 4 values for every map (Approach Rate, Overall Difficulty, Circle Size, and HP Drain) that the creator of the map can set from 1 to 10. The Hard Rock mod increases all of those ratings by a set amount, meaning that the values can literally go up to eleven. This is what an AR 11 OD 11 map looks like.

See you next time...

Alternative Title(s): Osu

http://tvtropes.org/pmwiki/pmwiki.php/VideoGame/Osu