Rainbowball · Spectrum League Adapted from RAINBOWBALL 2: BRUTAL UNICORNS by Raimon Ràfols. Source: https://github.com/rrafols/rainbowball_js13k Copyright 2026 Raimon Ràfols. Apache License 2.0; see LICENSE.txt. Modified 2026-11-01: responsive shell, instructions, pause and season controls, canvas fit, GPT-generated locally bundled court glaze integrated into arena rendering. Metadata tags: github-source, game. No upstream endorsements implied.