I enjoyed playing vector. Its nice and smooth with a lot of cool levels. Another game would be a candy crush type of game. Those are really addicting. Also maybe bejeweled. It depends on the type of games that you like.
I'll usually upgrade after 2 years. It all depends in the part. Maybe theres a cool new graphics card. If there isnt ill just keep my old one. I often upgrade storage since hard drives don't seem to be that good. I guess other hardware would include mice and keyboard.
I still play it but I dont have premium so I cant seem to find any servers that are good for me. I remember playing a lot of TDM before BF4. Also after playing BF4 the colors on BF3 seem to be very gray.