For me it's the Sony line, and heck I might as well cover each system really quick with a few great games to play.
PS1: Spyro Trilogy, Crash Trilogy, Final Fantasy Trilogy, Chrono Cross, Metal Gear Solid, Cool Border Trilogy, Tony Hawk's Tetralogy.
PS2: Dot hack games, Dark Cloud games, Gran Turismo Games, Ratchet and Clank Tetralogy. Jak Tetralogy.
PSP: Kingdom Hearts Birth By Sleep, Jeanne D'arc, Final Fantasy: Crisis Core, Dissidia Final Fantasy games (seriously my favorite fighters ever, weird I know)
PS3: Uncharted Trilogy, Ratchet and Clank Future Games, Ni No Kuni, The Last of Us, Bioshock Trilogy,
PS Vita Games: Persona 4 Golden, Danganronpa games, Tales of Hearts R, Ys: Memory of Celceta, The Legend of Heroes: Trails of Cold Steel games, Freedom Wars, All the Hyperdimension games. The Last of Us.
PS4: Marvel's Spider-Man, Dot Hack GU Last Recode, God Eater (soon to be) Trilogy, Dragonball Xenoverse 1 and 2, DBFZ, Horizon Zero Dawn, Uncharted 4, Dragon Quest XI, Tales of Berseria, Dragon Quest Heroes (not so much II).
That's just a few games for each Sony console I came up with mostly off the top of my head.