The best situation would be that the ARM processor is powerful enough to run an x86 emulation layer so you can directly play the same games you play on your PC on your phone or tablet. I’ve been experimenting with box86 and FEX on postmarketOS using a OnePlus 6T and already Steam and several lighter weight games are very playable, but the next generation Snapdragon chips should be able to take it a lot further when it comes to running more demanding games.
I should install Bazzite on my Ally and give it a try. I have Arch on it now, dual boot with the Windows 11 it came with. I want to keep Windows on it as I use it as a low powered Windows runner for GitLab projects, but Arch isn’t as nice to use on it as I wanted and if I’m just going to be gaming on the Linux side, immutable is fine I guess. I recently tried playing Fortnite on my Ally and it ran well, I have a Steam Deck for things that already run on SteamOS and I much prefer it to the Ally so if I install Bazzite it would just be for comparing vs the Deck and to experiment.