Anthony Kruize <trandor@labyrinth.net.au>
  - SDL port.

Jeremy Scott
  - Win32 DirectX port and ideas.

Arto Jantunen
  - Debian package maintainer, suggestions and bug reports.

Michael Olson
  - Bug fixes.

Ed Snible
  - Performance tweaks.

Nix
  - Improvements to the Make and Configure scripts.

Crack Dot Com <http://www.abuse2.com>
  - The best 2D platform shooter ever....Abuse!