At first: i like the DayZ and ArmA concepts very much. There are no games, that are even close to be that realistic. BUT, your "real virtuality" engine is crap. it was since the first iteration (ofp) and it ever will be. -unperformant -catastrophical collision-detection -no abillity to jump -bad controls (mousewheel menu, etc.) -struggling with animations -bad AI that are some of the "features" of your engine. it has too many legacy issues and it was ALWAYS the most criticised part of your games. Your engine is based on a engine about 14 years old, that always had issues with performance, AI, collision-detection, etc. So i would suggest to buy a good performing AAA engine (like Cryengine 3, UE 4, etc) to build this game. Money should not be a problem for that, since you sold over 10 million copies of dayz and made multi millions with it. Give us something back for the trust and money we spent in you. I know it first seems like a bad idea, since you have many things already done, BUT -you can keep using ALL the models and textures youve already made -you have no need to fix that huge amount of bugs you would have with you engine, since al the engines mentioned above have (vehicle) physics and collision detection already in it, and it WORKS in that engines. -it should mainly be no problem to convert your subroutines (inventory, character stats, central economy, etc) for a new engine, since all the engines mentioned above are extendable with external subroutines. -you will have MUCH better performance, since the most AAA engines, are developed in close contact with the hardware manufactures like AMD, NVIDIA, Intel. You would save time in the end, and would have not even half of the bugs you are dragging around since the 1st Real Virtuality engine from 2001.. regards Alex