# Third-party notices

## UNDERRUN

UNDERRUN concept, graphics, programming, level images, and original game
source are Copyright (c) 2018 Dominic Szablewski and licensed under the MIT
License. The complete license is included in `UNDERRUN-MIT.md`.

Source: <https://github.com/phoboslab/underrun>

Pinned revision: `f933e29152d7fc1ca61d4b3eaa8b29551d7d7a62`

This derivative removes the original looping music payload, retains the
original synthesized sound effects, adds a read-only gameplay-signal adapter,
and integrates the Pulse game SDK.

## Sonant-X

UNDERRUN's reduced Sonant-X source remains in this build only to synthesize
the original sound effects. It is available under the zlib license. The
complete notice is included in `SONANT-X-ZLIB.txt` and remains at the top of
the distributed `sonantx-reduced.js` source.

## Pulse music content

The bundled `.pulse` music package is not covered by UNDERRUN's MIT license or
the Sonant-X zlib license. See `PULSE-CONTENT-NOTICE.md`.