I mean old like Sega Rally Revo. This is not my video, but it sums up my experience playing in deck. The graphics doesn't feel too old when compared to today's games and I'm not sure why but I always get above 100fps even i limit deck settings to 60.
The Steam Deck has been kind of my introduction to PC gaming. The newer AAA games haven’t caught my attention.
I’ve played quite a bit of Neptunia and Senran Kagura. I might as well catch up with what I missed and can get for cheaper. Newer games like BG3 shock me with how much storage they consume, so I’m starting with older titles.
It can, but it's not trivial to set up. First you have to reformat/convert to btrfs, then you have to chattr everything, and defrag to do a compression pass on the existing stuff. And after all that, Steam does every download and patch with a preallocate that blocks out the online compression, so you have to subvol and anti-cow its downloading folder to defeat that.
Because everyone has time to 7z a -m”x=9” an entire game that might be hardly compressible due to drm, whenever they want to unzip and play a different game! /s
… unless the deck has some kind of built in compression I don’t know about.