I've just completed a small D/GtkD game.
It might be useful for others trying to learn GtkD since it is
only just over 1000 lines, yet shows how to create a dialog-style
app with a modal dialog and a modeless dialog, and a custom drawn
widget, as well as keyboard and mouse handling.
The source (and a 64-bit Windows binary) is here:
https://github.com/mark-summerfield/gravitate-d
I'm posting to the Learn forum because I'm just a D beginner, so
felt that using the announce list would be a bit presumptuous.