Links of interest
Links with a 
next to it are my favorites.
Fansites and blogs
A Website dedicated to listing the UK releases of the Club Nintendo magazine.
Bad Game Hall of Fame
A blog full of humorous reviews of historically bad games.
Animal Crossing Community
The first Animal Crossing fansite I ever visited!
A fansite for various fandoms, with a large focus on preserving fansite culture.
A gaming-focused blog with a chill vibe.
A personal website with a speedrunning page, as well as resources for those looking to get into it.
Guides and news
Serebii
My preferred place to get Pokémon news and tips.
Resources
ProtonDB
A site where you can view whether a game is compatible with Linux or Steam Deck.
Wikifang
A wiki dedicated to the Smilesoft monster-taming RPGs. Includes translation patches for some of the games!
3DS Hacks Guide
The best tutorial for hacking your 3DS.
Where to get games
Vimm's Lair
One of the best places to get ROMs of older games. Use Tor if you're European.
My Abandonware
A ton of retro games that have been abandoned by their devs for free.
Itch.io
Besides being a good alternative to Steam when it comes to indie games, it has a lot of other things available. TTRPGs, zines, tools... all by indie developers.
Flashpoint
A huge collection of archive Flash games... it's a bit of a pain to get it to work on Linux.