3 Days Survival is survive game like tower defense.You need to upgrade your house to fight the aliens in 3days.
Remember upgrade your house. There are 4 abilities: gun, strong, gem and research. You have to defeat the aliens to get more gold to upgrade in game and you always have many gems for each 5 seconds to upgrade forever.
So, Enjoy it!
If you have any questions or suggestions about this game, just dont mind contact us via email: firstname.lastname@example.org
Thank you so much!