Same Player Data w/Different Logins

[midnightsun321]

Hi, I'm playing the Attack of the B-Team modpack and I wanted to create a world save on which my brother and I could play on. I made sure that our separate accounts were put into the Technic Launcher. One of us would play for a while, and then when the other wanted to play, we logged out, and signed in to the other Minecraft account, loaded up the same world, but it seems that our player data is merged because we share an inventory and player location. I tried to delete one of the player data but nothing changed. I assume it's a problem with the launcher, because I've tried on several modpacks and the case stays the same. Any help would be greatly appreciated.

[disconsented]

The launcher doesn't create separate instances per account.

Why don't you just create a separate world each?

[arriej]

its just single player and that uses one player file not more, since its single player.  As said above make new world would be an option, if you want to play with your friends, host a LAN game Or set up a server.