yea
More plants,such as Weed(makes zombies high*,Bed-uce(a lettuce that makes plants asleep,making them more useful when they wake up),and more. More zombies also and more maps like the sandbox.
In my opinion, it is worth much more than that.
Plants vs zombies isnt free, but if your like me and you crack it then, yes it is free. Another way is u ask your friend, who has the cd-rom, to install it in your computer. I don't know if there is more than one version for plants vs zombies but my friend used the one with a red hard cover for the cd. Thry it! It worked on my com(actually it is a laptop)
Zombies are becoming more and more popular today than they were in years past.
Yes
No, you can't upgrade a gun more than once.
Yes
Yes, you can hold more one than one save file.
u unlock the musoleum by getting 3 rusty fragments from invasions then you can store some zombies in there
Yes because humans are way much more better and smarter than zombies. Zombies tried to kill humans with it's teeth but humans can run much more faster and break the zombies neck.
You can buy a gun that not ColtM1911 But you cannot buy more than 2
Yes because the MG42 can kill much more faster than a shotgun. The MG42 can also reload really quickly and kill more zombies than a shotgun. If some anti-zombies were you they will take the MG42 instead of the shotgun because the shotgun is the weakest weapon than the MG42. Shotguns can kill a couple of zombies per minute but the MG42 can kill over 1,000 zombies per minute and can really beat the shotgun. The MG42 is way much more better than the shotgun so the answer is yes.