One of the fun things about old video games, besides their obvious nostalgia, is that some of the more popular games have been pried apart and tinkered with for years, leading to a lot of new ...

Math Riddles are really fun to solve. We have another set of tricky math puzzles where one has to find the missing number in the place of the question mark. Test your maths skills and see if you can ...

The On-Line Encyclopedia of Integer Sequences catalogues hundreds of thousands of integer sequences, and has been cited in thousands of research papers. The goal of this project is to discover new ...