2. Find Niko Bellic
Sadly you can't track down Niko in person, but his presence is felt throughout GTA V. First he gets a mention in a cutscene as Lester remembers "an eastern european guy making moves in Liberty City", as well as plenty of flavour dialogue whenever you're on a heist and the crew get to talking about potential candidates to help out - but the more concrete appearance appears on Michael's son Jimmy's laptop. As Jimmy peruses the Facebook-parodying LifeInvader page in the family kitchen, you can clearly see Niko's page up and running, complete with profile page, screenshots from Liberty City's streets and a list of friends including Roman. Wonder if he 'Likes' bowling?