I've attempted to start Ground Zeroes several times. But it's the stupid checkpoint system that ruins it for me every single time. Getting a checkpoint save and a few seconds later the guy you've put to sleep earlier gets woken up and raises the alarm. Great, stealth walkthrough ruined. And there is no way to restore to an earlier checkpoint that I can see.MGS: Ground Zeroes. Never played any of the previous games since I never had PS2/PS3 but now I get why people fucking love this franchise and Kojima. Moving on to MGSV soon since I've recently picked it up.