co op split screen player save

Are you after 4 player split screen campaigns, or just 4 player co-op campaigns.

I'm not aware of any 4 player split screen campaigns, but Halo supports 4 player co-op campaigns. You'd have to check each game, but I know Halo 5 and Halo Reach (I'm pretty sure) support 4 player co-op campaign

It is co-op split screen if you're playing the game offline. If you are playing online it is up to 4 player co-op.

Is this co op as I can play 2 players split screen ??? On same xbone

In Minecraft, the world is saved to the account that is "Player 1" and starts the game first.

When the second player joins that world, he is saved together with the world in Player 1's save slot.

If the second player starts the game themselves, they start a new game with a new world and empty inventory, as they have no access to Player 1's savegame. To prevent that, make sure that Player 1 starts Minecraft and enters their world, and that Player
2 then joins that session.

If you want the two players to be able to play independently on the same world, you would need to rent (and pay for) a Realm that is hosted on Minecraft's online service.

can a co op split screen player save there info or do they have to start fresh every time they join

Hi. What game is this for? If you are playing Single Player, both players signed in and playing should have their game saved. If you are next to each other on the same TV it should be the same as well. Normally the game saves for both players and they can
re-join again if they happen to leave.