The new Digimon ones are apparently ridiculously cool, I have one of the “X” models but haven’t really taken the time to mess with it yet. My one buddy has been crazy about them though, trying to buy every version of it (a pretty even mix between collectors reasons, and loving playing with them)
The (maybe?) newest ones, the Tamagotchi Unis, had some special versions come out that kind of have a “DLC” that changes the Tamagotchi a bit. Like, there’s a monster themed one, but it’s really just a normal Uni that gets a new monster location and adds new Tama chains for what they can grow into. I say dlc because it comes with the card when you buy the monster Tamagotchi, but you can also get the code to change any of the units into a monster one.
Id take aesthetic DLC over NFTs and micro transactions any day, so I’d say it’s pretty cool still