You are correct.
However, programming in MiniScript is going to be easier, more efficient, and more powerful in pretty much every way.
MiniBASIC is being designed mainly as a way to run old code you might find in books like these. So it is old-school basic: line numbers, GOTO, all variables global, the whole bit. There will a few minor improvements over 1980s BASIC, such as paying attention to the full variable name instead of only the first two letters. And there will be some simple drawing and sound commands. But it won't have access to the full Mini Micro API, and it will never have the elegance and power of the MiniScript language.
So, while you certainly could write games in it, and in the interest of history or nostalgia it might be fun to do so, in any other sense it's probably not the best choice.