A generator solves the first draft problem
An AI game generator is most useful when the primary question is simple: can this idea become a playable draft fast enough to judge? It turns a prompt into something concrete, which is often enough for early validation.
That makes it strong for rough prototypes, classroom activities, simple campaign concepts, and first tests of a short game loop.
A maker workflow solves the next-iteration problem
An AI game maker becomes more valuable when the draft needs several rounds of change. After the first version exists, the real work shifts into tuning rules, controls, copy, difficulty, and pacing from what playtesting reveals.
The choice between generator and maker is really a choice between one good first output and a tighter loop for getting from first output to shareable game.