Showing up to your house in the middle of the night after you've politely refused is just disrespectful. And I totally get where you're coming from with having a friend who's extremely social, I had one until I just stopped answering his calls. The bottom line is, if you don't enjoy their company (and honestly the D&D game sounds like the worst kind of game) and they won't respect your occasional need for solitude then you need to drop them. The fact that they aren't respecting your boundaries makes me suspect that they aren't truly your friends but they get something out of having you along. Maybe they're the kind of people who feel they get an enhanced image by having so many people around them. Maybe they perceive your unwillingness to hang out constantly as an attack on them or they wonder what they did to piss you off. Maybe they can't understand your situation or are concerned. And because you've always gone along with their plans and have only started to stick up for yourself, they may see it as a sign that something is wrong which is a good thing. It means they care about you. They may not express it in the best way (like showing up to your house) but if they care about you then they should listen to you. If you've explained how you feel and they still won't listen, I would stop hanging out with them all together. My current best friend understands that sometimes I go into hermit mode, set my phone on silent and do my own thing for a while. He knows it has nothing to do with him and if there is an emergency he really needs to talk to someone about, he just has to text me or message me through facebook and I'll call him but the bottom line is he never does this unless it really is an emergency. He respects my boundaries and that's friendship is. Respect, a quality I don't see much of your friends having for you based on your post.