TickWords is a video game that lets you create and play custom crosswords built directly from your own study materials . Simply drop in your digital files (PDF or TXT), and it generates revision crosswords from the key facts and concepts inside. It also includes hundreds of pre-made crosswords covering a wide range of high-school and university subjects. The crosswords can be printed, or played as a video game. Crosswords are a relaxing way to study , but traditionally creating a high-quality crossword is both time-consuming and difficult. TickWords changes that by automating the process, it can scan your documents, extract the important terminology, and generate tailor-made crosswords in seconds . While TickWords is great at printing crosswords, there are also advantages to doing them in the software : Each term can have multiple clues across three difficulty levels , so you can revisit subjects at a different difficulty setting. Get revision crosswords that revisit words you previously skipped, flagged, or took a long time to solve. Use spaced repetition crosswords to help memorize facts, just like you would with flash cards.