Either because the game itself is still good, or because you think it's able to be appreciated for more historical/didactic reasons (e.g. Game X is the origin for a certain trope).
Or any other reason really -- you're not limited to the two.
Importantly, why do you recommend them? What appeal do they have to modern audiences?
The reason I'm saying "pre-NES" (Nintendo Entertainment System) is simply because I imagine that a good number of us here started gaming with the NES and don't have as much of a pulse on what came before it. I imagine even more of us started gaming well after the NES and would appreciate insight into that period of gaming history.
> # [What pre-NES games do you still recommend today? - ~games](https://tildes.net/~games/1vah/what_pre_nes_games_do_you_still_recommend_today)