Fortress Defense is a tower defence game that encompases aspects of city builder. You can create towers to defend your base against bomb, these bombs range from cannon-bombs to nukes. You have two options for towers, one slower and more powerful and the other is a faster shooting tower that is less powerful. Parts of the map are mines and houses. Mines give you more gold overtime and houses allow for more towers to be placed. There is a population limit and there are only a select number of spaces that towers are allowed to be placed, so select wisely!