Ojama, often referred to as オジャマ or お邪魔 in Japanese, are a game play option available in all Pop'n Music games. Ojama are only originally only available in Challenge mode, Super Challenge mode, and NET Taisen, but from Pop'n Music 20 fantasia onwards ojama can be chosen in Normal mode by simultaneously pressing both white buttons.
Ojama are included as an optional mechanic for players wanting more of a challenge. Ojama vary in difficulty, ranging from simple speed-ups to completely overhauling the interface. They reward more points when used however, and these points can be used to unlock items in-game.
Once chosen, ojama are activated during certain sections of songs, indicated by flashing "danger" text in the play area. In the ojama select screen, the white buttons can be pressed to set the ojama to "Throughout" (ずっと), causing it to occur for the whole length of the song instead.
In Pop'n Music, ojama were only available in Hard mode. They couldn't be chosen however, and the ojama used on each stage varied. Rival characters also performed different actions while the ojama was being used as well (Dino breathed fire, Rie-chan made a heart with her hands, etc).
Normal mode featured a variant of the regular ojama, with sections where the background would become flashier and more difficult to see. Unlike Hard mode however, the notes themselves were unaffected by this.
Pop'n Music 2 was the first game to introduce Excite mode, which would later become Challenge mode. Much like the Hard mode of the first game, ojama were always on and varied between stages. Party mode was also added, and it hid various symbols amongst the notes. When the symbols were pressed, they triggered a power-up or an ojama. Pop'n Music 5 was the last game to include Party mode, and Excite mode was renamed to Challenge mode.
Starting in Pop'n Music 6, ojama could be chosen while playing Challenge mode. Up to two different kinds could be selected, and each one gave a set number of points depending on the difficulty. Challenge mode remained this way up until Pop'n Music 19 TUNE STREET.
Pop'n Music 20 fantasia removed Challenge Mode, as such ojama are now selectable in Normal mode by pressing both white buttons. Playing with ojamas activated still gives points, which can unlock several special items and extra stages.
Pop'n Music Lapistoria introduced new options, and as such some ojamas were removed. Ojama points have been changed to "Pop'n Aura", though most point values remained the same.
List of OjamaEdit
Background color and icons indicate difficulty, with light blue being easiest and granting less points, and light pink being the hardest with the most points.
✴ Denotes ojama has been removed in Lapistoria
| ✴ Beat Pop-kun|
|Changes Pop-kun to Beatmania-styled notes|
|✴ HI-SPEED (x2)||Speeds up Pop-kun by x2||-|
|✴ HI-SPEED (x4)||Speeds up Pop-kun by x4||-|
| ✴ Force Half-Speed|
|Makes Pop-kun fall at half speed (only effective if Hi-Speed is on)||-|
|✴ HIDDEN||Pop-kun become invisible near the judgement line|
|✴ SUDDEN||Pop-kun are invisible until right before the judgement line|
|Pop-kun become smaller|
| White Pop-kun|
|All Pop-kun become white|
|Judgement and combo numbers are set at random|
|No flash effect shows if the note was hit or not, except for Bad notes|
| Fat Judgement Line|
|Judgement line becomes thicker|
| Fat Pop-kun|
|Pop-kun become larger|
| ✴ Character Pop-kun|
|Pop-kun are set to rival character's icons|
| Spinning Pop-kun|
|Pop-kun spin around|
| Beating Pop-kun|
|Pop-kun beat in rhythm|
| Burst (SPIRAL)|
|Pop-kun spiral around|
| Fluffy Judgement Line|
|Judgement line moves up and down|
|Entire screen becomes black, with the exception of the Pop-kun, characters, and score|
|Different lanes flash when Pop-kun are hit|
| Zoom Pop-kun|
|Pop-kun change size while coming down|
| Shaky Earthquake|
|Judgement line and Pop-kun move around|
| Burst (CIRCLE)|
|Pop-kun come down in circular motion (similar to 爆走（SPIRAL))|
|✴ HELL||Missed Pop-kun deplete gauge faster|
| Micro Pop-kun|
|Pop-kun become very small|
|Rival character appears in play area|
| Top and Bottom Press|
|Top and bottom of the play area is pushed together, causes Pop-kun to become smaller and slower|
| Vertical Branch|
|Pop-kun double up vertically|
|Background becomes a pink check pattern and Pop-kun shift into pink and red hearts|
| Frog Pop-kun|
|Pop-kun are bouncy and appear as frogs|
| ✴ Twinbee|
|The background and Pop-kun take on a Twinbee appearance.|
| Top and Bottom Press & Press|
|The play area is pressed and unpressed repeatedly, similar to 上下プレス|
| Scattered Pop-kun|
|Pop-kun fall down in varying sizes|
|Fake Pop-kun (ones with sunglasses) are hidden throughout normal ones, once fake ones are hit they set off a smoke effect|
- The Frog Pop-kun Ojama is practically identical to Utacchi's "notes".