>>28
That's the most reasonable option, and the choice of the original. Using Ren'Py has it's advantages since it's popular, free, and there's likely to be Python programmers here. It'd also make it easy to embed a Scheme interpreter into the game, the only other VN doing this being Mahou Gengo Lyrical Lisp, an NScripter game: http://lyrical.bugyo.tk/
If anyone through some sheer miracle ends up contacting the anons who last worked on it, we could pick up where they left off.