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Game Design

Math for Authors: Linear vs. Exponential Growth

Konner Moshier
May 19, 2026
1 min read

One of the hardest parts of starting a LitRPG is defining the initial formulas. Get this wrong and you end up with "number bloat," where stats become so large they lose all meaning.

Linear Growth

Linear growth adds a fixed amount per level.

Formula: HP = Base + (Level * 10)

  • Level 1: 110 HP
  • Level 50: 600 HP

Pros: Easy for readers to do mental math. Combat stays grounded.

Cons: High-level characters don't feel god-like compared to low-level ones.

Exponential Growth

Exponential growth multiplies per level.

Formula: HP = Base * (1.1 ^ Level)

  • Level 1: 110 HP
  • Level 50: 11,739 HP

Pros: Tier differences are massive. A Level 50 can ignore a Level 10's attacks completely.

Cons: Numbers get messy. Readers stop tracking specific values and just look at the length of the number.

Building Your Formulas in WriteIDE

You don't have to guess. WriteIDE lets you define derived stats with your own formulas, like HP = VIT * 10 + Level * 5, and recalculates them live as your numbers change, staying correct at every point in the story.

Sketch the curve before you write Chapter 1. If the math looks off at Level 80, fix the formula now. The power-curve graph (shipped in 0.4.9) lets you watch a character's whole arc on one chart, so pacing problems are obvious before a reader ever sees them.

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