Pictures and ads have little to do with actual game-play. It is NOT a zombie survival/base building game. It's a pay-to-survive alliance PvP game. Your base will be completed quickly, zombies are trivial and are farmed at leisure. You will spend first 6+ months trying to get strong enough for a weaker alliance to let you join. Assuming you have $500 spare to get the workers you need to fill all your bases needs, most workers have no free/random option and cost $30-$70.