i would be fine with this (even if its not my fetish) but the bursting part makes me look like
I know most people aren't into it at all. But even if it was just an option that can be toggled. Like, if the future cum piston implementation could be stacked, (they stay full after the first one, or until you take out the piston or whatever's inside them), and you can just keep filling them bigger each time. Eventually their skin gets tight, their skin turns shades, (it'd be red for anything like a mammal, but idk what it'd be for the endergal and creeper, etc.) and they start letting out little strained moans. Until eventually after like 5-6 fillings, and their belly growing HUGE, they let out small panicked, aroused/pained moans or screams. Obviously since it's a fantasy porn game they'll be fine after. But it could cut with a white gooey explosion and then have them in an idle stunned animation afterwards. Idk it just makes it way more exciting, seeing that tension build up as they're helpless to stop it. And you don't even have to go through with it. You can just take the plug/piston out and empty them.