It's less a matter of money and more a matter of time..
Dear haroldo,
I have found a trick programming by myself to add 3 players instead of one, i have to check if there is possibility to add more, this in Batari basic. Have a look at this game i have built as example SPACE AGED/ATARI 2600 by TreLeMaTechnology
"In Batari Basic under playersize0 or 1 or both write =0E you will magically have 3 players or 6 in 2 players mode."
Oh, I see, that's the feature you were referring to. I thought you were asking something more complex. 😁
You can already do that in VCS Game Maker by using the "Player X set width/quantity to" block: