You simply want a database, i can only imagine using firebase, supabase, making a server with mysql or postgresql, you want a thing that is not only using a simple command or 5 lines of scripts to get, its more complex than u think, but its still free and 24h per day if you have knowledge.
But, if you REALLY dont want to use httpservice, you can use the property _G of the roblox, this is a table that is shared between the entire game, so for example:
At script 1, you place:
if player:GetAttribute("Alone") then
_G[player.Name] = "Alone"
end
and at script 2 you do:
if _G[player] == "Alone" then
print("Alone person")
end
it WILL script “Alone person”, because the _G is a table thats shared between the scripts with the same context
With this you can simplify the communication between the games.
so, u can make options for the table, for example:
Game 1:
_G[1239122312] = {}
Game 2:
_G[1671254156] = {}
Game 3:
_G[9234627134] = {}
With this and using messagingservice, you can get the same variable names inside the games, and using them with a default script, keeping it updated with datastoreservice to the “Data Player”, that wont need to join or leave
And update the table when joining if theres no server available, so if theres a server online, dont update the table when a server is created, you do this with messaging service
Each game would have their own data player that saves the _G table of the game, and not the entire
With this, u can divide the work of the _G table, that will be working for every game, getting what you want and not losing anything.