What it teaches
Everyday food words — the ones that come up at a table rather than in a textbook. Like the animals, these are things a child already knows; only the English is new.
Food words are also the ones a child can use immediately, at home, on the same day. That matters more for keeping a word than any amount of extra practice.
What to look for
Use the words at a meal on the same day. A word used once at a table is worth several rounds of a game, and the game exists to make that first use possible.