I have only had WordSearchExplorer game a short while so maybe this is not a fair assessment. It is simple fun, but the puzzles are just too small and too easy. I saw quickly there were lots of bells and whistles, fluff and junk…those add-on things that are not needed to word search. I just wanted a plain and simple word search and unfortunately this was not it. There were no pop-up ads initially, but not many levels in to the game, the multiple screen advertising showed up. Do not get me wrong….I fully understand the whole drill about advertising on a free game…revenue needs and app development. Please do not go there in your response; I do not need a tutorial on why you use ads on free games. I do think it is funny that as soon as the ads started I began to get pop-ups for the ad free version. Use ads if you must but be responsible about HOW you show them, WHEN you show them, how LONG you show them and WHAT you show. If a third party is doing your ads, OWN it and maintain control. It is your app, your company, and your name associated with the ads shown there.