Are they these games worth playing?

I've have been a gamer for as long as I can remember. I was probably at least 6 or 7 when I played my first video game, and it was probably the Mario Bros game on the Nintendo 64. Since then I've been playing games like: Assassin's Creed, Darksiders, MORTAL KOMBAT, Soul Calibur, Call of Duty, Splinter Cell, Castlevania, Super Smash Bros, Mario Bros, Megaman X, Zero, Star Force, Battle Network, Devil May Cry, Bayonetta, and a bunch of others.

I've been hearing a lot of things about Resident Evil, Dead Space, Dark Souls, Mad World, Dragon Age and are they worth playing? Plus if they're are any other good games worth mentioning that be good to know cause I want to play a new franchise and I don't want to buy a crappy game.