When I was playing dying light with friend we discovered that every timw you go to sleep and wake up air drop will appear, if you don’t know air drops are pretty rare and if you collext them and deliver to one guy you will recieve lots of xp, we used that multiple times to unlock grapling hook very early. Air drops also gave lots of medicine which was hard to get in early game and that very helped us
Back in the original gta, you had to collect sort amount of cash to get transported to next city.
What I’ve discovered, was cash generation machine.
Basically, I’ve somehow managed to stuck my car over river and in other end of river there was building. If you did it correctly, car would shake alot and started to generate money.
I was like 6-7 years old, so at least that’s how I remember it.