I recently started a world with what was supposed to have everything in it, but it lacks blaze spawners which are a critical part to making potions. So is there a mod where I can place spawn blocks and still have it count on the leaderboards in survival? I don't want to go into creative mode because that voids all leaderboard progress.
This has an inventory editor, but after extensive use it will not be able to mod it. http://www.xpgamesaves.com/pages/360revolution