The latest bumper update to hit Los Santos confirms what we already knew: GTA Online is now a single-player game. Well, it's at least a single-player game if you want it to be. The multiplayer offshoot of GTA 5 has dabbled in solo ventures over the last few years, but part two of its latest Drug Wars update – the first, named First Dose, having arrived in December; Last Dose having landed yesterday – drives independent interplay home on a grander, more obvious scale. And that's no bad thing.