Skip to content

hktitan/duolingo

v2.0.0MIT

The Duolingo playbook as agent skills — retention, streaks, gamification, learning science, curriculum, efficacy measurement, metrics, experimentation, growth, brand, voice, culture, hiring, platform and mobile engineering, observability, and LLM feature design. Distilled from 750 posts on blog.duolingo.com plus the Duolingo Handbook and Design System. Start at the /duolingo router; design and UI craft routes out to design-engineering.

duo-character-systems

Build a reusable cast, illustration style, animation vocabulary and avatar system that a small team can actually produce at volume, and make those assets do product work instead of decorating it. Covers choosing a visual style by production throughput, silhouette-first mark design, deriving new characters from shared construction rules, where to spend expensive delight assets, how much craft a celebration animation needs, transformation versus props for milestones, testing a central metaphor for cross-cultural legibility, reviewing art that depicts real groups of people, and porting a 2D identity into 3D or a generated pipeline. Use when someone says "should we have a mascot", "our illustrations look inconsistent", "redesign our logo so it reads at icon size", "we need characters for onboarding", "build an avatar creator", or "does this milestone deserve an animation".

Version
2.0.0
License
MIT
Read SKILL.md at the source

Pinned to revision 78072c9528fb, so it is the text this page describes rather than whatever the author pushed since.

Files

Every link opens the file at its source, pinned to the revision this page describes.