🤑 Indie game store🙌 Free games😂 Fun games😨 Horror games
👷 Game development🎨 Assets📚 Comics
🎉 Sales🎁 Bundles

At the moment I'm using Linux Mint, and it's been pretty fairly decent for gaming on since it's not using Unity as its core feature, but comes readily available in Cinnamon, KDE and Mate. You could go for super light and fast alternative like Arch Linux where you get to build and choose what stuff you want installed on your system, install your own preferred desktop manager. I might recommend Wayland instead of X11 for the display server, but it's still in early build development, and you may have issues using official graphic drivers like Nvidia's, since it's built around open-source drivers, but I do believe there is workaround support for it. Running a minimal setup would be the way to go.