I've also just finished Culpa Innata now, and I enjoyed it immensely. The story was excellent, the dialogue pretty good, the voice-acting wasn't consistently good or bad and nowhere near as bad as I'd feared from what I'd read - I've heard far worse in games. The puzzles were fine, too - they require concentration but are not too difficult to solve. The story did have one awful moment when I thought we were headed down towards a Fahrenheit-style collapse in quality, but fortunately the writers pulled back from the brink (was this even a parody of Fahrenheit, perhaps?) and the quality returned. The World Union and the Rogue States are a fascinating setting, and I think a sequel sounds like a very good idea.