Would it be possible?

let’s say we have a game that is divided in 3 parts,the parts are uploaded
on a site,
now here’s the problem: would it be possible for part2 and part3 to acces the
.sol file of part1,part 2 to be able to acces save data of part3(and vice versa)?
if possible how?

many thanks to come,and a nice big spot in the credits :-),rpgfanatic