THE AP CALCULUS RPG

Solve calculus.
Save the Isles.

A 3D world broken by a fractured derivative. Every problem you solve puts it back together — all 8 units and 81 topics of AP Calc AB, one Rift at a time.

Play free

f^{'} (x) = lim_{h \to 0} \frac{f ( x + h ) - f ( x )}{h}

∇

lim_{x \to 0} \frac{s i n x}{x} = 1

∇

\frac{d y}{d x} = \frac{d y}{d u} \cdot \frac{d u}{d x}

∇

\int_{a}^{b} f (x) d x = F (b) - F (a)

∇

f^{'} (c) = \frac{f ( b ) - f ( a )}{b - a}

∇

\frac{d}{d x} e^{x} = e^{x}

∇

V = π \int_{a}^{b} (R^{2} - r^{2}) d x

∇

\int \frac{1}{x} d x = ln ∣ x ∣ + C

∇

\frac{d}{d x} arctan x = \frac{1}{1 + x ^{2}}

∇

\frac{d P}{d t} = k P

∇

f^{'} (x) = lim_{h \to 0} \frac{f ( x + h ) - f ( x )}{h}

∇

lim_{x \to 0} \frac{s i n x}{x} = 1

∇

\frac{d y}{d x} = \frac{d y}{d u} \cdot \frac{d u}{d x}

∇

\int_{a}^{b} f (x) d x = F (b) - F (a)

∇

f^{'} (c) = \frac{f ( b ) - f ( a )}{b - a}

∇

\frac{d}{d x} e^{x} = e^{x}

∇

V = π \int_{a}^{b} (R^{2} - r^{2}) d x

∇

\int \frac{1}{x} d x = ln ∣ x ∣ + C

∇

\frac{d}{d x} arctan x = \frac{1}{1 + x ^{2}}

∇

\frac{d P}{d t} = k P

∇

zones

one per CED unit

topics

the entire AB curriculum

∞

questions

generated from a seed, machine-verified

forever

no ads, no gems, no battle pass

// WORLD MAP

Eight zones. One per unit. In order, like the exam.

Fracture Shore

Limits & Continuity

16 topics · §1.1–§1.16

Velocity Dunes

Defining the Derivative

10 topics · §2.1–§2.10

Chain Jungle

Chain, Implicit & Inverse

6 topics · §3.1–§3.6

Motion Canyon

Contextual Applications

7 topics · §4.1–§4.7

Summit Peaks

Analytical Applications

12 topics · §5.1–§5.12

Accumulation Delta

Integration & Accumulation

11 topics · §6.1–§6.14

Slopefield Steppes

Differential Equations

7 topics · §7.1–§7.8

Volume Isles

Applications of Integration

12 topics · §8.1–§8.12

Each zone ends in a boss: 8 mixed questions, 6 to pass, retries free.

// GAMEPLAY

The grinding is the studying.

You're a Gradient Keeper. Rifts are problems. Correct answers heal the world. That's it — that's the game.

A rift question with its worked solution — miss one and it shows you the whole solution. no lives lost. we're teaching here.

Fracture Shore zone with its 16 topics — topics unlock in CED order. bronze the topic, open the next. boss at the end.

// MASTERY

Bronze is easy.
Radiant is earned.

Mastery is tracked per topic, 0–100, with spaced review missions so it sticks past Friday. Gold demands range — you have to beat every kind of question a topic can throw, not grind one template. Streaks only count school days. We're not monsters.

TOPIC 3.1 — THE CHAIN RULE

Bronze→

Silver→

Gold→

Radiant

MASTERY 87/1002 REVIEWS TO RADIANT

STREAK — SCHOOL DAYS ONLY

MTWTF❄ 2 freezes held

Every question is generated fresh from a seed — no two grinds alike.

An independent solver re-checks every answer. The game cannot gaslight you.

Aligned to the College Board CED, §1.1 through §8.12.

// FOR TEACHERS

You get the data. They get a game.

Section join codes. A live mastery heatmap of every topic. Weak-area flags, time played, CSV export. See who's ready for May before the first mock.

Set up your class

Teacher dashboard: per-student mastery heatmap across all topics — period 3, live. red cells are Monday's warm-up.

The exam is in May.

The Isles are broken now.