* Cave Story 126.96.36.199 with Aeon Genesis English translation. Cave Story Deluxe will do nicely.
* (to run the SIFEdit sprite-properties editor) wxWidgets. SIFEdit is a little sucky under Windows, I suggest you run it under GTK instead.
* (to compile source under Windows) MinGW/MSYS
Sourcebz2gz - fixes an annoying bug with the weapon system, plus a few minor tweaks.
Source - support for bitmapped fonts, fix ballos glitch, many misc tweaks and bug fixes, support for big-endian and ARM processors, and initial support for WinCE devices (requires sdlshim).