Which games use AI credits - Vocab Monster

You can practice on any plan without spending credits. Credits are used only when a game delivers an AI-generated prompt. 1 AI credit covers one delivered AI prompt. For AI Memory Match, one credit covers one delivered pair. Default (system-selected) play uses a credit the same way as choosing a named model.

Games that use credits

These modes generate content with an AI model:

Fill in the Blank
Context Detective
Synonym Sprint
Antonym Challenge
Synonym Match
Opposite Match

Games that never use credits

These modes use your word data (definitions, audio, or matching) and do not spend credits:

Quiz
Flashcards (word → definition and definition → word)
Definition Match
Speed Round
Spelling Bee

If you are out of credits, AI games stay unavailable until monthly credits refresh, you upgrade, or you buy AI credits. Non-AI games still work. Details on monthly vs purchased balances are in How credits work.