Radius Raid - by Jack Rugile (https://jackrugile.com)
A js13kGames 2013 entry. Licence: MIT (see LICENSE.md).
Source: https://github.com/jackrugile/radius-raid-js13k (commit 361ab5166570cfc8a29a4fc15c9afba566117b66)
Sound effects are generated in the browser with jsfxr (JavaScript port of sfxr), bundled upstream as js/jsfxr.js.
This copy was adapted for Spare; see SPARE-CHANGES.md.
