I'm not actually that old in a way I can talk about old games. I spent most time as child playing Super Mario Bros but that's it. Currently my favourite shooting game is Overwatch and racing one probably Gta or Project Cars/Assetto Corsa.
All time favorite is Phantasy Star Online on Dreamcast. It was my first massive multiplayer experience and it was so far ahead of its time. MGS3 would probably be second cause that game tore my heart out.