Keeping the undead under control requires regular adjustments to positioning, ammunition use, and spending between rounds. The complete game is unlocked in this modified edition, providing access to all playable content included in the Android port without trial restrictions. Updated touchscreen handling also allows simultaneous movement and camera control, making the first-person combat more practical on compatible devices. Weapons and purchasable map features retain their normal gameplay requirements. Full-game access does not provide unlimited points, endless ammunition, or invincibility, so every additional round must still be earned through careful play.