Castel Wars is a retro-pixel tower war/defense game that can be played by two people.
In the game, you can build small bricks to get away or catch the other player. If you use the cannon in your tower, you can do more damage to your opponent. The mystery hero who flies above with balloons and sometimes drops bonuses can give you new weapons and bullets. If you get stuck, press the action button and throw your sword to get rid of the enemy.
Have fun and good luck!