Connect and Defend! Connect TD is a strategic game where little bit of mathematical knowledge matters. Connect weapons through numbers to increase bullet counts and shoot to defend. Boss Fight!: Every level you will encounter different types of boss, strategize to defeat them. Different kind of weapons: Each weapons bullets have different attribute; Fire - Ice - Earth Strategic connect: Every connection line matters. Upgrade and Optimize: Each weapon's damage and fire rate are upgradeable, select one to play.