Images generated by Oh, My Dots! are distributed under the CC0 license. You are free to reuse, print and distribute them.
The worksheets can be freely distributed and printed, but cannot be altered neither can the Oh, My Dots! attribution be removed from them.
Game pictures are the pictures used to generate the games and displayed at the end of the game. The game pictures used by Oh, My Dots! are extracted from one of the below websites. And are distributed under the CC0 license or their respective website license:
Game Pictures uploaded by the users