i mean its a good game very fun and addictive my only problem is the gems. its hard to get but besides that theres no adds disturbing you. they only put adds in your face if you ask for them and theres so much work and fun put into only a few fun little tower defense mechanics. for tips i would say to buy the skeleton leader log in every day to get the rewards because there super helpful and keep doing the events. you might get something out of it most of the 1 star reviews are probably bugs lol