Basically servers and Pis.
If you wanted to host your own site and services, a Linux vps was (and still is) the only choice. Back then it was Debian, nowadays I use Arch on everything. Same with Raspberry Pis when the first one became available in 2012. With university I started using Arch on my laptop and later when Proton and Wayland became good, I moved to it on the Desktop as well.
The game runs and is supported with its anti cheat for a while now but I assume the performance isn't great.
I recently discovered Tinykin, neat little game.
I am running alarm / Arch Linux ARM aarch64 on mine for years already. Just make sure to use the linux-rpi kernel and use rpi4-eeprom for bootloader updates as these are not installed by default.
I learned that using nix on arch for the home directory in addition to pacman and the aur is quite an unbeatable combo that I prefer to having everything managed by nix. The problem with nix and nixos I see for one is that it leaves some performance on the table for reproducibility and that many packages are or cannot be packaged for nix. Additionally arch already is quite reproducible albeit not as much as nixos. Writing your own meta package with a simple pkgbuild to manage the system base seemed like a good substitute for me.
+1 for the Technitium DNS server. I run it in Docker on a pi4 because I need a proper local dns server first that does DoH and ad and tracker blocking second. It does the latter just as well as pihole and adguard with support for many more list formats but pihole and adguard do dns just on a really basic level.
I am surprised no one mentioned HCL yet. It's just as sane as toml but it is also properly nestable, like yaml, while being easily parsable and formattable. I wish it was used more as a config language.
Even if I don't use this distro and just use plain Arch myself, I know that CachyOS is a bit more special as it at least compiles the arch repo packages for a newer x86 target and with additional compiler optimizations again that improves performance on newer CPUs. You can achieve the same on an Arch system with the wonderful ALHP project I use on one system but Cachy certainly makes this more accessible.
Yeah, I would even say that most custom kernels have a very negligible advantage in gaming. I know the zen kernel aims to reduce latency but I would say it comes more down to compatibility and features. For example one rather recent thing I remember since Fedora changed this as well is that the vm.max_map_count is already set on linux-zen to the same value the SteamOS kernel uses (I think it's just INT_MAX) that helps with game compatibility on Wine/Proton.
Yeah, the linux-zen kernel is a good alternative to linux-tkg for gaming that's available in the official repos. What most likely makes the biggest difference and is probably the issue for @inurblacchole is the lack of gamemode. Depending on the cpu and the default governor used it might not boost enough in games where performance or schedutil is needed.
GOG only distributes the Windows versions sadly.
du -sh ~/.cache/* | sort -h