It is straight up impossible for me to play evil when there's a moral choice system. I've tried it, and almost immediately I won't be able to make the evil decisions. It really limits my playthroughs for games like fallout and mass effect, but it's probably the biggest rule governing games for me. This carries over into online stuff as well, namely as 'don't be a dick.'
In a similar vein, I can't let slavers or rapists survive, ever. It brings out this weird bit of rage in me that I can't keep in check: those guys are so bad I simply can't help it. In a game like fallout or elder scrolls, my character basically becomes the swift and bloody hand of justice.
Finally, I typically cheat first (in single player, never in multiplayer) and only go for skill plays for games that I really want to. It's more fun for me to be not only a badass in game, but to really play with what's possible within the game engine. Plus, I don't have time to really grind in for rpgs and stuff. I still like to leave the possibility of failure, though, that's way there's still a little challenge.
In a similar vein, I can't let slavers or rapists survive, ever. It brings out this weird bit of rage in me that I can't keep in check: those guys are so bad I simply can't help it. In a game like fallout or elder scrolls, my character basically becomes the swift and bloody hand of justice.
Finally, I typically cheat first (in single player, never in multiplayer) and only go for skill plays for games that I really want to. It's more fun for me to be not only a badass in game, but to really play with what's possible within the game engine. Plus, I don't have time to really grind in for rpgs and stuff. I still like to leave the possibility of failure, though, that's way there's still a little challenge.