1) Space Marine, Dawn of War and Skyrim (with 40k weapon, armour and race mods). Single minded, I don't know what you mean.
2) Space Marine is a very good hack and slash and shoot, unless you're so angry about the whole Matt Ward Ultramarine debacle that you can't stand the sight of them even when the astronomicon isn't shining out of their arse. Dawn of War is a very tight RTS and Skyrim from the perspective of a Grey Knight trying to kill as many demons, heretics and xenos as he can before the planet undergoes exterminatus is a laugh. So if they're the sort of games you'd enjoy, then you'd enjoy them. Decisive.