Only one robot model can be built at a time. 【6-in-1 Robot Building Kit】This robotic kits come with 780 pieces, can create 6 different robot models: Space Robot, Battle Robot, Space Reconnaissance Vehicle,Heavy Tank, Fighter, Tracked Vehicle. With the help of detailed instructions, kids can easily dismantle and rebuild into different models, providing a fun and engaging way for them to explore the wonders of space travel.