All of the games categories:
Number games is any game that involves basic mental arithmetic. So if you enjoyed maths at school these might be the games for you. Although the scoring for some events involves complex ideas such as counting and adding up (try this after 9 days of competition) they are not counted as number games. It is always useful to bring along a friend who is good at number games (or a calculator) to work out your Pentamind points.
The full list of MSO games that are in this category are below or for all games see Games A-Z.