For something that's called "Planet of the Monsters" it sure doesn't feature a lot of monsters. Or much of Godzilla. But there's loads of talking and mecha, that counts for something, right?
Godzilla looks slightly better here than in his last appearance in the US (never have seen Shin Godzilla, nor do I care to), but he mostly just stands still. When the Hanna-Barbera cartoon has more action, there's something amiss.