Building Better TTRPGs With Functional Thinking
summary
Builds a playable TTRPG by moving logic off brittle Google Sheets + Apps Script into F# + Fable, using SAFE/MVU for UI, typing to model domain rules, and composing magic and weapons from the same templates. The result is a decoupled ruleset and setting, automated character sheets, and a working recursive battle‑map combat loop that has been playtested in sessions. Claims faster iteration, fewer surprises from API failures, and clearer rules derived from the compiler forcing better design.
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chapters (12)
- 0:00Introduction
- 1:25Why I made my own TTRPG
- 3:10Desired TTRPG features
- 5:16First iteration: Google Sheets
- 7:46Switching to F# with Fable
- 9:10Building with SAFE Stack
- 10:37MVU architecture in F#
- 12:26Functional thinking in game rules
- 13:48Decoupling setting and mechanics
- 15:12Flexible character creation
- 16:36Final thoughts on FP benefits
- 17:39Live demo and Q&A
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