light of Twilight is being developed to run on an existing, popular free visual novel engine called KiriKiri (Japanese homepage). This program is free to use and modify under the GPL. In order for this software to function properly with English many modifications need to be made. For this purpose, Mystery Parfait uses a special fork of KiriKiri that supports these necessary features. When the project is complete, this program will be made available for other English-language visual novel enthusiasts.