I have a question for you... why don't you like bubble tanks? Or better yet, why do you like whatever it is you like? Personal preferance.
People like the game because you have the ability to upgrade your tank. It is unique for a flash game because your ship is always changing. The graphics may be simple but hey... PS3 has really good graphics but most of those games are so-so at best (in many people's opinion), meaning that graphics are not everything. The gameplay is very smooth. It is simple. The theme is about fun, not gore or anything, so it is more of a nuetral theme.
