The big issue in running into is that I can utilize the space but not for a game or I can make it a game but I won't use much of the space.
200 Lego studs on an 8x8 grid is more than enough to play goh, but it well barely fill the small cavity. I can make a chess like game, but it won't fill the main cavity. I can fill both with a small set of legos, but there's not a lot of potential for structured play outside of a race to build.