The true number of playable games is of course much higher, but this is still an impressive milestone.
For comparison: the Nintendo Switch has roughly 4500 games available for it, the PS5 has about 500 games (+ 3500 PS4 games), and the Xbox Series X/S have 400 (+ 3000 Xbox One games).
Wait. Why? Everything I’ve tried works well. Maybe I haven’t tried enough games?
They might just mean that ProtonDB has a much higher number of games marked as playable or (or playable with tweaks) than Valve’s verified system.