Pencil and Paper Games – many of these links provide online versions
The site Pencil and Paper Games.com includes some topological and number games, all the games can be played with pencil and paper, though many of the games can be played online if you wish.
Play on paper or use the online version. The winner is the player who shades the last petal
Noughts and crosses (NRICH version)
The classic Game – if you go first can you ensure that you win?
Noughts and Crosses – Strategy
Note also the links to Online, Fifteen and Jam – try these in the order given.
What do you notice about the strategies for these games?
Odd Tic Tac (noughts and crosses variant) (NRICH)
Square It (NRICH game) Also known as ‘Boxes‘
Players take it in turns to click on a dot on the grid – first player’s dots will be red and the second player’s (or computer’s) will be blue. The winner is the first to have four dots that can be joined by straight lines to form a square.
Note you can click ‘Full Screen Version’
Try Sprouts for example.
See this article from Nrich ‘Sprouts Explained’