Yakinikukingu Yamagataten

Great for a ton of variety other than just yakiniku meat and for an all you can meat (and drink option). If you prefer thicker cuts of better quality at a similar cost (but not all you can eat), I'd recommend Yamagyu. Across the road is an all you can eat shabu shabu and sushi restaurant. Same price. Obviously with both being all you can eat, quality isn't the best but ok once in a while for a stuff your face session!

This place has the spiciest food that I've found yet in Tendo/Yamagata yet. Easy to order from the tabel even if you don't speak Japanese.

Great, everything you can eat. A lot of variety and special secondary dishes. Not the best quality, but extremely pleasant if you are ravenous.

Make me scare of all you can eat meat bbq Even though I am a meat person

Meat King? Yeah, he was.