Wait until you hear about The Sims

No, not at all. Games used to have demos and trial versions, like basically all games, but game studios used to have to actually finish making a game before they shipped it. Trying before you bought was the business model of the whole industry. Now so many games are shipped in such bad condition they wouldn’t dare let you try it first. Trying before you buy is just prudent, as long as you actually buy the ones you like enough to play through.

“No, don’t [do that]” is not a double negative, it’s just two independent negatives in a row, they don’t affect each other. A double negative would be like “don’t not do that” which will mean “do not fail to do that” to most people.