I'm too busy to take requests right now, sadly. :(
There's no reason for Fusion, it's just what I've used for years. The text is just an IBM VGA font, no special object. There's nothing authentic about it, I just superficially made it look like an old ASCII game.
I imagine using an engine like Twine or Quest would probably have been easier, but I'm not familiar with them.
I'll check out Usurper!