Call of Duty: Black Ops isn't exactly a gadget, but hey, it's a game for Microsoft Windows, Nintendo DS, Wii, Playstation 3, and Xbox 360, so I think we can consider that.
Click here to buy Call of Duty: Black Ops
For gamers out there, I've found a way how you can dominate COD Black Ops. Click here.
I've found this secret on how you can survive and dominate Black Ops. It is a survival guide that has everything you need in order to win: a walk through, step-by-step video guides, multiplayer survival, single player cheats, unlock codes, and the like. Go to this link by clicking here to know more about these secrets. After you have learned the skills, you should come back here and tell me how you dominated Call of Duty.
Here's to your success! =)