I am happy you’ve enjoyed the course! Thanks for following along, Sergio! 🙂
As you’ve seen, there is a lot involved in just the game-art side of game development, however that is just one part. The rest of the complexity comes from what exactly it is you’re wanting to do, what engine you want to use, your programming ability, etc.
You will have to look at the features your engine of choice provides, as usually they are pretty up front about what platforms they will publish to. It is very possible you could export a game to a Nintendo console if you wanted to, however if you intend to sell that project there are other legal hoops you’ll need to jump through with the platform itself to make that happen.
For your basic example, I think that is more than doable. Again, it primarily comes down to engine of choice and programming confidence. There are many tutorials on YouTube for pretty much any game engine you have heard of, helping people make any type of video game. You may try looking up “[game engine] endless runner tutorial” or “[game engine] vehicle tutorial” to see what is comparable to what you are looking to do!
While there are types of games that are easier to make than others, as a base level I would say that making videos games is challenging. Not impossible, but it is the culmination of several disciplines of all calibers. Visual Art, Math, Science, Music, Design. There is a lot that goes into making a video game than people give them credit for.
All that being said, with enough patience and some good Googling, I’m confident you will be able to achieve what you would be after! You’ve already come this far. 🙂