what you're missing out on: -hot ready up menu -camera recoil / muzzle flash -reloading animations (that actually take the mag!) / shotgun pumping -physics powered bouncy guns -aiming down sights -sprinting + reload -sprinting + cycle guns -sprinting + reload + switch guns (cancels reload) -swapping a gun for another gun -adding a gun to your cycle (max ## ###### ###### but everyone can see them and the cool upodate effect -upgradable guns/buyable machines / killable zombies -fuse 2 upgrades together -16k brick map 1000 studs long diagonal -spectating!!11!!!!! -proper pathfinding zombies using the new API / animated zombies -3rd person animations