A battle of influence · local strategy
FORTRESS
Build strength.
Hold your ground.
Raise a castle. Turn the tide. Every square is a struggle for control.
Play FortressTwo people, one device · or face the computer
Small board. Shifting borders.
One move can
change everything.
Build with one tap. Place a castle on an empty square of the 6×6 field, or reinforce your own up to strength 3.
Make your influence count. Each square feels its own strength and its four orthogonal neighbors. Stronger influence claims territory; ties stay neutral. Overwhelmed castles collapse.
Hold more ground after 21 rounds. Share a device with a friend, or challenge one of five computer opponents. After a computer match, you can choose optional local learning.
Choose your opponent