Microsoft knows that Halo is a system seller. That’s why last year at E3 we saw the TBD titled Halo get a tease. But without knowing when the next Halo would be coming out, they needed to keep the appetite wet for gamers before the hoopla of this year’s E3 kicked in. What better way to do so than open up preorders to the world. If you head to Amazon you can place your preorder on Halo 5: Guardians which is set to ship by end of year 2015 (no doubt, this will be more formally announced with an actual release date at E3 or at least a quarter).

There are two things that stand out about Halo 5: Guardians based off the current cover artwork. The first is the name. Since Halo: Combat Evolved, this is the first proper Halo title to have a suffix attached to it. This leads one to believe it is either because they feel just another number isn’t enough of a differentiator to keep motivating new purchases or these new Guardians are that essential to the plot.

Ever wonder just why grunts look the way they do? Or if the inspiration behind the Forerunner architecture came from Frank Lloyd Wright? Or if the Warthog always looked like a jacked up Jeep 4X4?

Just in time for the 10th anniversary of Halo: Combat Evolved, Titan Books along with Bungie have released The Great Journey: Halo: The Art of Building Worlds. Inside is close to two hundred pages of original concept art from Halo: Combat Evolved all the way to the most recent Halo: Reach and everything in between.

Halo: The Art of Building Worlds takes players through the journey of Bungie as they created not just Halo: Combat Evolved but the universe that surrounds it. Some of the artwork are full two page spreads, beautifully painted works, that show the lush environments of the Halo universe. Other pages include series of sketches of everything from variations of Elite and Spartan Armor to the unused fauna concepts that never made it into certain games.

These pieces are some of the most interesting as you get insight into the Halo that never was, including the original concept for Master Chief and the completely un-iconic name he was almost graced with back when Halo was still an RTS game. Much like looking at classic Star Wars concept art, this book is a literal nerdgasm of “what if”.

In his foreword, 343’s Frank O’Connor explains how Halo has become this generation’s Star Wars. Looking at the artwork and stories that have come from them in this book, we have to agree with him.