Raph puts all his training to the test as he stops a Kraang invasion in the Turtle Lair Battle by Mega Bloks Half-Shell Heroes! An evil Kraang Walker has come stomping through the Turtles' sewer hideout and it's even brought a Mouser for backup! Little ninjas can build the lair and help Raph defend it when they send him down the tunnel entrance, knocking over the arcade game to blast the Mouser out of the way. Guard the lounge, sending pizza flying when you take aim with the pizza launcher! Then, fold Raph into a ninja ball and use the Turtle launcher to send him flying forward, crashing into the Walker and knocking the Kraang to the ground!