That should be tamagotchi. It's a geminated 'ch', at least in the original Japanese.
As if no one could figure out what you were talking about.
I didn't write that, you did, I did upvote the GP, and my thanks were sincere. To expand on that I'm more than happy to have mistakes corrected so at least I don't end up propagating wrong spellings or ideas or to have them further ingrained. Actually, I'm stupid for not looking it up.