Allusionary is a fun,informative and educational trivia game. Allusions are brief references to persons, places, times and events. They fall into four basic categories: biblical, historical, mythological, and literary. When authors use allusions, they assume that their readers will understand the allusions and what they signify. If the knowledge and significance of the allusion is not understood by the reader then the significance of what the author was trying to convey is missed.