Sushis VS Blockies

This is an anti-traditional physics puzzle game, ever see a similar picture of the game, usually played are destroyed, down goals, this game is just the opposite. Players need to do is to use materials that appear in each level, build fortifications against sushi catapult attacks. As long as the red box is not encounter any sushi after 5 catapult attack, you can cross the border. We usually play a role in the past, is to destroy the fortifications hit the red box, and this time we had better protect him slightly! See if you can successfully complete the task to protect it!