KARANTIIN is a true grim first-person RPG in which you will face hordes of zombies with upgraded weapons laser sights, suppressors, extended magazines, drum magazines, laser sights, flashlight mounts and soon skins. If you have a good monitor and its frequency is higher than 60 hertz, then leave vsync off, KARANTIIN likes high frame rate. If you have a too awesome graphics card, then you can choose a higher number for vsync if your game has too high a frame rate.