We had something very similar only it morphed into an explosion of other games such as one where a person drew an obstacle course and a range of items the second player could use once or another game involved drawing a range of soldiers (which shot using pencils) and tanks (which shot using thick markers) which could be moved using a dot system (i.e. you had to draw a 1 cm line, draw a dot, for a single step) with tanks being allowed to move 1 move, soldiers 2 moves, ninjas 3 moves, etc.