Interactive, themeable multiplication drill game with a Hogwarts aesthetic. Solve equations quickly to push back the “dementor” overlay, earn gold, buy cosmetics, and track mastery. Supports keyboard play and a quick-use consumables bar.

Highlights

Progressive levels tied to specific fact sets; XP queues focus facts (no auto-master).
Dementor pressure overlay + CAST timer that scales with problem difficulty.
Keyboard + on-screen keypad; quick consumables bar for instant use.
Gold shop: skins (Houses, Marauder’s Map, Spellbook), trails, pets; snitch bonuses (infrequent, hides when dementor is near).
Hint grid after repeated misses; darker overlays brighten UI/text for readability.
Persistent progress via localStorage.

Play

Open index.html in a browser (or serve the folder with any static server).
Enter answers via keypad or keyboard (0–9, Backspace, C/Esc to clear, Enter to CAST).
Earn gold/XP on correct answers; spend gold in the Student Trunk; quick-use consumables from the bar under the keypad.

Gameplay logic

Timer: CAST bar drains with dementor; duration scales with problem difficulty (larger factors give more time). Timer-out counts as a third miss after a brief grace period.
Miss flow: 1st miss shakes; 2nd miss shakes + shows star grid; 3rd miss (or timeout) auto-fills the answer, adds to trouble list, and requires pressing CAST to continue.
Focus facts: XP fills queue entries instead of auto-mastering; queued facts are injected into upcoming questions.
Snitch: appears rarely (45–75s) and only when dementor pressure is low; grants bonus gold when clicked.
Data/key: arithmancyDataV17 stored in localStorage.

Development

Tech: vanilla HTML/CSS/JS (no build step).
Entry points: index.html, style.css, app.js.

License

MIT License. See LICENSE for details.

Credits

Game design & playtesting: Alyssa, Jolene, Kathleen, Evelyn

README.md Unescape Escape

Hogwarts Arithmancy Flash Cards