Which engine / coding language is currently the most promising in terms of sales?

[barleyman]

I need to make some money, but the only thing I wanna make is videogames.
So, what is an engine / language that I can learn and use to make videogames and sell them ?
I'm not talking about the present, but about the future as it will surely take some time to learn such language or engine and then probably do what I can do.
So which language or engine do you suggest to learn so I can make some indie games and where / how to sell them ?
Of course, I'm not planning to make big games, just indie games (if such term still makes any sense nowadays, of course).

[Dr. "Rocket" Romano]

Oh yeah it'll take time alright. Going to school for this stuff is probably the best bet.

C++ is probably a big one, also one of the hardest to learn apparently. Unreal Engine is written in C++. Then there's C# which the Unity engine is written in.

Then there's Python which is supposed to be easier.

As for selling stuff I have no idea.

[souza13alex]

I agree, but you need to find a school where programmers teach practitioners who are actually involved in software development today, not just know the theory.

[Dill the Grey]

Oh yeah it'll take time alright. Going to school for this stuff is probably the best bet.

C++ is probably a big one, also one of the hardest to learn apparently. Unreal Engine is written in C++. Then there's C# which the Unity engine is written in.

Then there's Python which is supposed to be easier.

As for selling stuff I have no idea.

To sell your wares you'll need a website therefore webmastering and server-side coding will be necessary unless you want to pay someone else to run your site. I agree with you on all points, C++ and Unreal Engine will suffice for software and game development, I'd like to mention learning PHP as well for webmastering.