You can game on just about any distro -- I'm using NixOS and it's great for many reasons, but also can be a real pain to learn and to solve new problems.

But if you're looking for the easiest to set up that will be most likely to just work and gaming is a priority, go for Bazzite.

I will second Fedora and Debian as extremely solid, well-supported distros, though both will require some initial setup (mostly enabling nonfree repos, especially for Nvidia gpus)

OpenSUSE Tumbleweed here, both on my desktop and Steam Deck. i like the stable rolling release model. Allows me to get shiny new things that have at least gone through automated tests.

And in case anything goes wrong it comes with snapper configured by default for easy rollbacks.

Fedora

Debian. It wont win any awards for fastest release cycles but it's rock stable with great support for my Ryzen 2700 and 6700xt.

I game on Fedora because it was just the OS I installed on my gaming PC when I moved to Linux. Everything is fine between Steam, Heroic, and Lutris. The NVIDIA drivers were easy to install from the App Store and the only game that doesn’t run well is Death Loop but there’s been some updates and I haven’t tried it in six months so it may be better now. There was a memory leak apparently but I think there were more problems.

Nobara (Fedora)

Tried Bazzite for a year. Was fun but now back to a normal distro.

I'm a Linux Mint user and I've not had many problems using Steam as a Flatpak.

Fedora KDE works great for me, but I'm quite comfortable with Linux already

Bazzite on the living room PC.

Pretty much any distro will work for gaming these days. Really up to personal preference. I use Arch but have heard good things about Pop!_OS.

Rocking Garuda here!

Currently Pop!_OS

Cachy OS on personal PC and Bazzite on steam console (htpc) and a onexplayer handheld. Then just good old steamos on the steam deck.

I switched to Cachyos KDE a week ago. It's the best distro I've used (previously I ran Debian KDE, and Mint Cinnamon before that). I have a GTX 1070 ti and it set up with zero issues. Steam installed perfectly, and I used AUR to install the gaming-meta package.

Mint for two years. Then Arch for a decade. This year I have been trying out CachyOS.

Just rolling with OpenSUSE Tumbleweed.

Tumbleweed. Stable rolling release distro.

Endeavour OS! So far it's been smooth for the past 4 years. I've enjoyed it.

I've been enjoying EndeavorOS on Plasma.

Fedora on my desktop, bazzite (rebadged fedora) on my steam deck.

I'm always a lil surprised how few fedoras I see on these posts. Fedora is chill. Considering the difference between distros is basically a package manager, seems weird the second most bleeding edge distro doesn't get much love.

OpenSUSE Tumbleweed. Meets all my requirements 😀

Bazzite. Literally built for gaming.

Void with X11 (fvwm3). The fussier games tend to be online live-service titles; every new release Genshin Impact does a new weird.

Manjaro (Arch) with hyprland for my window manager.

Linux Mint Xfce

Mint because it doesn't break often and usually fixes are simple enough, and Xfce because, though I don't know how well it fares compared to others nowadays, it was the variant that would run the lightest in a previous computer I had some years ago, so I grew attached to it.

Also besides Steam, Heroic (for GOG, EGS and Amazon Prime) and Mitch (for Itchio) work fine on it.

PopOS. Lots of folks recommend bazzite for gaming though.

Nobara but considering other option such as Bazzite and GLFOS.

Slackware current.

This isn't a troll. I use it to game on my dual core pentium lovingly dubbed 'the craptop'. And I use it to game on my mid-tier gaming PC.

Arch. If it's not a server, arch. Always arch.

Be aware support for 1050 on 580 version of driver is ending so rolling release distos can make u a problem when they will upgrade version higher than 580

I was running a GTX 1660ti and an i7 until yesterday using CachyOS. Worked great! Though for older cards, I might recommend a LTS distro to ensure you retain support (Mint is my go-to recommendation).

Arch, all flatpacked.

I've been using Nobara for about 2 years and it's been very good.

Arch Linux. I wanted to try Hyprland with something and I felt like it was the easiest with Arch.

CachyOS KDE + Windows 11 debloated dualboot with games on shared BTRFS drive and WinBtrfs driver

Bazzite runs great on my main gaming PC in desktop mode and on my HTPC in gaming mode. Maintenance is minimal and it just works (on AMD hardware), while packages are pretty recent and it's absolutely stable.