I had so many fun experiences in Gta...with friends, alone, with strangers...doesn't matter. So many are still stuck in my head where we and my friends can have a good laugh about.
BUT
favourite game is for sure Dark Souls.
Best music i ever heard in games, insane level design, lets me be creative with my build and character, allows me to koop, amazing pvp and never fails to set me into this nostalgic state. :')