Can't there be a incest patch like other games have.
Sure, but someone has to create that to make it so. There are a couple of things preventing that from happening right now. Firstly, WhitePhantom isn't focused on this game at the moment; his Patreon polls have pushed for him to finish
Defending Lydia Collier first, which he is doing really well on. Not a lot of updates left on that game before he'll switch back over to this one. (Don't interpret "not a lot" to mean just one or two, however.)
Secondly, if the developer doesn't create the patch themselves, you have to wait for some user here on F95 with knowledge of whatever engine is used in different games (Ren'Py here) to create the patch that would work for the game. Basically, patches find and replace text. An original line of code might be something like
"Why is [s1] walking around in only her underwear?" Then, elsewhere, the variable
[s1] is assigned a value of
"my roommate" in the original game code, but the patch changes that value to
"my sister". So, the sentence ends up changing from "
Why is my roommate walking around in only her underwear?" to "
Why is my sister walking around in only her underwear?" But someone has to specifically make such a patch, which apparently hasn't been done yet.
Additionally, I have heard — I cannot confirm this, mind you — that sometimes someone working for Patreon will visit this site, specifically looking for someone who is trying to circumvent their policies. They try to see if someone's game doesn't
technically have incest, but actually does have it (when they release an incest patch or incest version of the game here). I honestly think this is BS, because I've seen plenty of developers have a Patreon version of their game (no incest technically) that differs from a Subscribestar version (with incest). Among others, I can think of
Sunshine Love that does this specifically. But it's possibly this is true, which would be another hurdle.