I've been on a bit of a Rockstar binge lately, following Red Dead Redempton 2, I've revisited Red Dead Redemption, GTA IV and GTA V, as well as the various DLC, and now I'm preparing to enjoy Red Dead 2 all over again when it releases for PC on November 5th this year.
In the mean time, though, this rather excellent mod for GTA V brings a whole host of brand new missions to the single-player mode to keep you occupied - in fact, there's 70 new missions to partake in, with more being added with subsequent updates.
Created by modder alebal, it uses the Mission Maker Tool to add a huge number of new missions to the game, which will see you completing various transport missions, flying helicopters, skydiving into moving boats and of course, lots of shooting.
You'll need to get the Mission Maker tool here in order to be able to play, and there are a few bugs that may occur, although there is an FAQ with some fixes on the mod page. You'll probably also want to grab the "Open All Interiors" mod, as a few missions require that too.
You can grab the mod now here.