Games modes
From Build & Defend Wiki
The main game of Build & Defend (the way it is supposed to be player) is called the Survival mode. The goal of this mode is to survive as long as possible in an hostile environment.
Several other modes have been added to test new features or focus on a particular aspect of the game.
The Survival mode
The Building mode
The Tutorial
The Devel mode
The Dungeon mode
The Epidemic mode
The Fortress mode
The Unit tester mode