There's a few IT servers around, how large they are in GB I'm unsure but I'm positive you'll find out if you search about. There's also Lioden if you're into that sort of thing, but I believe you have to be a certain age to join, it's been so long I can hardly remember. Most games nowadays that are worth playing (in my personal opinion) are pretty big in size, but I'll keep an eye out and be sure to post here if I find or remember a game that suits you. Good luck in your search, and keep safe.