Nick and Tesla and the Super-Cyborg Gadget Glove: A Mystery with Gadgets You Can Build Yourself

Nick and Tesla and the Secret Agent Gadget Battle: A Mystery with Gadgets You Can Build Yourself

Nick and Tesla and the Robot Army Rampage: A Mystery with Gadgets You Can Build Yourself

Nick and Tesla and the High-Voltage Danger Lab: A Mystery with Gadgets You Can Build Yourself