Retro Games I Digitally Own

As an emulation enthusiast, I play a lot of old games. I don't really see much harm in downloading ROMs and such, particularly for older systems and in a lot of cases they aren't currently on the market anyway, but it is nice knowing when you legitimately own a copy of a classic game.

I have a substantial physical collection, but I won't be listing those here. I thought it might be interesting to figure out which retro games I own digitally in some way or another, whether it's individual re-releases or remasters, compilations, or even just bonus games in some newer release.

For the purposes of this list I'll consider "retro" to be anything before the PS360 era.