If you already have a game that works, rebuilding its look or moving it to another platform is far cheaper than starting again.
What a reskin involves
We have done a good deal of this: several titles in our past work are reskins of an existing core. The mechanics stay; everything the player sees changes. In practice that means replacing art and audio, applying your branding, adjusting balance and pacing where the new setting demands it, and delivering a build ready for the store, or handling the store submission ourselves if you would rather not.
Porting
Often the real request is not a new look but a new platform. Moving an existing title to desktop, or to a current engine version it has fallen behind, is work we take on in the same way. It is also the point at which most old projects turn out to need more than a port, and we will say so early rather than late.
What we need to quote
The engine and version the game was built in, whether you hold the full source, the platforms you are targeting, and what you want changed. With those four things we can give you a realistic figure. Without the source, the answer is usually that a rebuild is cheaper than a reskin.
Email info@dftgames.com.