I had an entire shelf of games that would run on the 16K one, although it did get a lot better when they switched to 48K admittedly. Pretty sure Hungry Horace would run on 16K.
There was even a 3D tank game, well kindof, it was 3D but with line drawings only but for the time that was impressive. Plus everytime you blew something up it had to redraw the objects exploding ...slowly...very slowly. But we had patience back then. :)