Welcome to Crosser! The rules are simple: you need to cross all the dots with the lines, applying the patterns from ‘Patterns’ block. Just drag the pattern from it’s area to play field, and choose the right position for it. You can not apply the pattern to the dots, which are already crossed, but you can move already applied patterns. Apply all the patterns, get all the dots crossed, and then, go to next level.
Good luck! Simply grab the pattern, and drag it to some blue dot. Once it’s near the dot, you will figure out what does the pattern do. It crosses all the dots in particular directions. Your task: using a few patterns, cross all the dots with the lines.