Japan Prefecture Challenge

Prefecture Rush

Recognize the shapes and race through all 47 prefectures!

Look at the prefecture shape and choose the correct name as quickly as you can.
You can also choose with the arrow keys or by swiping up, down, left, or right.

View Detailed Rules

Click Start to begin the game after the countdown!Tap Start to begin the game after the countdown!

Loading maps...0 / 47
English Name
Sound Effects
TIME30.0SCORE0COMBO0

Which prefecture is this?

NPrefecture outline

â„ī¸ Known for the Sapporo Snow Festival!

ITEMEvery 100 SCORE

Top 10 Results

Your top 10 results are shown here. Play results are saved in this browser.

No results yet. Your top results will appear here after you finish a game.

Rule Details

How to Play

  • For the first 5 correct answers, choose from 2 options. From the 6th onward, choose the prefecture name that matches the displayed shape from 4 options.
  • You can answer by tapping or clicking an option, using the arrow keys, or swiping within the choice area.
  • On the start screen, you can turn English names on or off. When enabled, the English name is shown alongside the Japanese prefecture name in the choices and answer hints.
  • All 47 prefectures are in the question pool from the start of the game.
  • After 50 correct answers, the map shows only the prefecture itself without surrounding prefectures.
  • After 100 correct answers, the map rotates to a random angle in 10-degree increments.
  • The time limit starts at 30 seconds. The game ends when your remaining time reaches 0.

Time and Combos

  • A correct answer adds 1 second to your remaining time.
  • A mistake removes 2 seconds and resets your combo to 0.
  • You earn a combo bonus for every 5 correct answers in a row. COMBO 5 gives +1 second, 10 gives +2 seconds, 15 gives +3 seconds, and 20 or higher gives +4 seconds. From COMBO 25 onward, you also earn +1 SCORE.

Text Hints

  • Short hints introduce each prefecture through local specialties, sightseeing spots, festivals, geography, and more.
  • Hints appear immediately from 0 to 9 correct answers. The delay increases by 1 second for every 10 correct answers, reaching 4 seconds from 40 correct answers onward.
  • Each prefecture has multiple possible hints, and one is chosen at random.
  • After 6 seconds, part of the prefecture name is revealed with some characters hidden. After 10 seconds, the full answer is shown.

Score

The faster you answer correctly, the more points you earn. Mistakes do not directly reduce your score.

Answer TimePoints
1 sec or less10
2 sec or less9
3 sec or less8
4 sec or less7
5 sec or less6
6 sec or less5
7 sec or less4
8 sec or less3
9 sec or less2
Over 9 sec1

Items

  • You earn 1 random item every 100 SCORE.
  • The item card appears in the slot for 1.5 seconds, then activates automatically.

Item List

  • Any Choice Is CorrectSSRAny choice will be correct for the next 5 questions.
  • Score +5SRAdds +5 to each correct answer for the next 10 questions.
  • +10 SecondsSRImmediately adds 10 seconds to the remaining time.
  • 2 ChoicesRLimits the choices to 2 for the next 10 questions.
  • Score +3RAdds +3 to each correct answer for the next 10 questions.
  • +5 SecondsRImmediately adds 5 seconds to the remaining time.
  • 3 ChoicesNLimits the choices to 3 for the next 10 questions.
  • Score +1NAdds +1 to each correct answer for the next 10 questions.
  • +1 SecondNImmediately adds 1 second to the remaining time.
  • Combo GuardNKeeps your combo through up to 3 mistakes.

Item Drop Rates

RarityDrop Rate
SSR (Any Choice Is Correct)1%
SR4%
R25%
N70%

Saved Results

  • Your top 10 Prefecture Rush results are saved in this browser.
  • Your top result is protected automatically, and you can protect up to 5 results with the lock icon.

Map Data

Prefecture outlines use Geolonia's “Japanese Prefectures ” data.