Thanks, it makes me glad to see that you've enjoyed the game this much.
I definitely had some ideas in the case I wanted to do some sort of sequel (the dark/inverted world and an antagonist with glitched stats), but I would not put much hopes on it since I have A LOT of other ideas for different games that I want to give priority to.
Though this sort of puzzle might return to the future, maybe in 3-4 years I'll make the sequel to Octostranded with Kalena, a crossover featuring character from my games. XD
So it's definitely possible that at least Kalena will appear in some future games C:
Also, who knows. This game came out all of a sudden from a game jam. Maybe the history will repeat.