It is actually a great game. I just hope that the game will let us keep the weapon we upgraded already from previous map. I do not like the way I keep on restarting whenever I finished the map. I hope they can just make the zombies way stronger in the next map to the point that I will be more encourage to upgrade my weapons. The forced ads are kinda often but glad it only last between 10-16 seconds. Looking forward to the improvement of the game. Thank you!