wish they keep creating new games like this one , even after more than a decade this game is still the best zombie shooter in mobile history, everything is great graphics controls weapons support and shelter stations upgrades easy of course with a lot of grinding and patience but you can have everything maxed in the end and doesn't take too long, the story is great wish they added more to it but you can play the capaign missions again or stick to the daily and map's missions from all types of missions. 2 or 3 years ago they added an 11th level (mk11) but that's it. ok i get it that after years of free play they went to the 3rd p2w sequel Unkilled which i also played but got bored of it and went back playing this one again and again and again on multiple devices, game account saves your progress and can be accessed on all devices. so far never saw a good zombie shooter like this one not even close with the diversity of weapons and missions from all types that you can have all and maxed within a fair time spent. few games carved their names on top of their genre like galaxy on fire 2 same feelings for this one.