This game is so awful and the only way it resembles YGO is by ripped-off images. Konami could legally suit the creators of this game for making money out of their product (by the way this already happened like 6 years ago to the BYOND version of yugioh even though that one was completely free and with an open world). Honestly, I haven't ever been facepalming so much in my whole life. And bear in mind - this is all coming from a Yu-Gi-Oh! TCG player.
Today I've played this game for x'th time to get those badges(all those times I've played were without badges o.o). I've noticed a bug in wave 27(4 times in a row). If you let all those zombies gather in one place and you just blow them up with a few mines game gets crashed. You can repair your car, heal up, reload, buy things. But zombies will be stuck until you go to pick up a part or shoot "real" zombies(you can shoot dead zombies and see their blood spilling but this doesn't help). Hope this helped to fix your game or at least a few guys who can't complete this game without glitches :D
To all people complaining/qq'ing about short circuits:
Ladies, ladies, just buy upgrades and try to avoid them with magnet and dynamite, these things keep you playing for 1 hour achievement and makes game a little bit harder -.-
5/5 I like it and I want more!
Bug: i tried to have defeated few times and i got kicked to another bubble, but after i got back 3rd or 4th time i could see no boss and it couldn't move out of that bubble :(
sometimes in theese series i get bugged and can't do anything, i can press arrows, but it does nthing, same with items lol. +1 if you get this problem too
as for now i can only go to lvl 16 with ~85 deaths and lvl 15~40deaths, can't pass lvl 16
just know every second lane goes from white to black, then white again, and wait for bubblesto let you go from white to black again, but i can't pass vertical part