DS2 could do a board game as follows I think. A long rectangle (like a height chart) with unnumbered (though I could tippex them) steps leading up to the top. Some snakes and ladders fine.
Standard snakes and ladders hasn't quite worked yet because you basically have to ignore the numbers on the board itself or be capable of addition which he isn't. Also, you have to see that the figures are turning round corners to go up the board......
Can anyone recommend anything along the lines I'm thinking or am I going to have to get creative (eek!)with a height chart?