This is absolutely normal generated world, ported from the PC version of Minecraft. Developer there have been some improvements, such as changing some biomes where you can find peaceful mobs. This map recommended to play in survival mode without cheats, unless You wimp out. Next to the spawn - approximate coordinates 0,0 in the desert You will find a chest. Then look for the spawn eggs that you can use against mobs. Do not put them in the Ender chest until you are sure that You have spare. Lower the world has not changed, but it is better not to appear there, in order to avoid mistakes of the game, but You have the right to do whatever you want. Also replaced various types of stone (andesite, granite, diorite) on the glowing rocks, thick ice and quartz. And still there are oceans of lava.