Discover the greatest city in the world all over again during the worst event in history: the zombie apocalypse. A Piece of Blue Sky, set in New York City, shows the big apple in a whole new light, and explores its great sights while engaging the player in a story of survival, deception, and devotion.

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Those of us at Grumbe Drive feel very strongly that we have a great game and story to offer the mod community and gamers everywhere. That being said, we are a new studio, and as such, are planning on testing things before really putting a ton of hours into this project. This is the idea behind the HL2:EP2 mod. We are going to be using the beloved yet outdated Source engine to 'rough draft' A Piece of Blue Sky, and then see how it goes after that.

The idea behind this game is to explore a post-apocalyptic New York City, which means that visuals and realism is very important behind that idea. As we all know, those two things end up being very labor intensive. This is why the rough draft plan works best for us. We can highlight, through Source, the best parts of our game, and then take them to new heights in an engine like UDK or CryEngine, or others.

The creative process is already heavily underway. It may not get to it, but a story arch for a trilogy has already been planned, and it offers some very good story telling. The limits of Source hamper this a bit, and so we do not want to present the Source Mod as the final version of the game.

We'll continue updating progress on here, and encourage anyone interested in joining our small team, to email us at




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While I admire the fresh attitude of drafting this out first before starting any in depth development, I have one gripe. Does it really have to be zombies yet again?

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mattsb Creator

I hear ya, a lot of zombies on here.

Thing is, the inspiration for this game was thinking how cool NYC would be as a setting for a zombie apocalypse. It won't come across so much in the mod/draft, but the emphasis is the story of a corrupt church and the setting of NYC, as opposed to the zombies themselves.

Also, obviously, HL2 is zombies, which is the main SDK that I know.

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Latest posts from @grumbledrive

The game is still in the works, stay tuned...

May 8 2013

A Piece of Blue Sky is slowly being worked on... If anyone has Source SDK experience and wants to help, PM me.

Feb 28 2013

Finally, our ModDB profile is up and running... Check it out here:

Feb 16 2013

ModDB profile should be back online any minute

Dec 30 2012