Steam has a lot of game sales over the years, and I bet you have gotten a lot of games from them. But, what is the sale you got the most games? If you can remember of course. I don’t remember the biggest sale I took advantage of. I think one sale years back, I got around 5 games or so.
I took Tekken 7, it was on sale a week or two before, similarly GTA V was free, Rocket League as well.