[quote]Thanks for answering! Yeah sorry about the planet thingy... The ark is one of the halo rings right?[/quote]It makes the Halo rings. There's also a second and even bigger Ark. [quote]When will we see the spartan fours though? I'm pretty curious...[/quote]Halo 4 [quote]And another question, what happened with the flood? like, how did the flood escape?[/quote]The Covenant broke through the quarantines and containment on the first Halo. [quote]Also, why did the forerunners make the halo's a livable place?[/quote]Because one of the head forerunners required that Halos be used as giant lifeboats carrying as much life as possible after the rings fire and eliminate all other life in the galaxy. [quote]Why is there grass and sky and what so ever?[/quote]The Forerunners were technological gods and they had a thing for aesthetic appeal. [quote]Couldn't they have just make it like one big round machine?[/quote]They wanted to be able to treat localized infections in the galaxy. In addition to the Halos, they also built Shield Worlds which are large, round, inside-out planets that protect the inhabitants from the Flood and the effects of the Halo array's firing. Requiem, the setting of Halo 4, is one these Shield Worlds. There is also one in Halo Wars. [Edited on 10.04.2012 10:21 AM PDT]