I get an error and the game crashes when I use the Slime Mother potion on a pregnant human NPC. It doesn't seem safe to use transformation potions on pregnant characters ATM, because it causes a a critical bug. However, the transformation potions seem to work just fine on characters when they are not pregnant. This appears to be the only bug I could find. This build of your game is pretty bug-free and plays wonderfully. You did a good job on it.