How much of a transition process was involved in moving from the original engine to Lumberyard?asked by Jon Martindale

We found it very easy to transition as our engine and Lumberyard share a similar base in CryEngine. We made extensive changes in our engine from the 'vanilla' CryEngine, as had Amazon with Lumberyard, so for us the approach was to strip each engine down to their matching parts – then add our changes back again to the common core. Essentially this was the work of only a few days, so it was a very easy transition indeed.