Clearing a crowded fortress takes more than flinging birds at the nearest target. The weight of a stone block, the position of a wooden beam, and the timing of a special ability can all change the outcome. This Android port comes with the full game unlocked, allowing access to the complete content included in the port without an additional full-game purchase. Scores and individual challenges still have to be earned through play, so finding an efficient way to dismantle each structure remains the real task.