Go with the Unreal engine.

First you must invent the universe.

I use [url=http://www.crydev.net/]Cry-Engine[/url], I'd recommend it.

This is my dream job. To actually program the game engines.

[b]Do not try to make an engine from scratch.[/b] Sure, it's possible, but unless your some kind of programming prodigy it will take you years to ever get anything working, but more likely you would give up by then. Really, I think this question is less about how to make a game engine and more about how to make games/ Go with a premade engine(there are a number of good ones). But first, you need to learn programming. Games cannot be made without it. I always tell beginners to learn Python as their first language. Get a handle on the syntax, the concepts of programming, but more importantly, learn to solve real problems with code. Programming can be frustrating to learn, but stick with it. I can assure you, coding is probably the single most useful skill(aside from reading, basic math and such) I have ever learned. Once you have a decent understanding of programming, you will be able to start actually making games. Now here is the most important thing to take away from this post: [i]don't get over-ambitious[/i]. In other words, your first game isn't going to be Skyrim or Halo 4. Games take a tremendous amount of blood, sweat and tears to produce, often with teams of a hundreds. But don't be discouraged. Be [i]realistic[/i], but don't give up just because I've told you how difficult it is. Many a person--myself included--one day decided they wanted to make a game and didn't realize just how hard this task can be. Make simple games. Something simple and 2D like a platformer or even a text based adventure game. Don't worry if your first game, or your first twenty, are terrible. And if this lights a fire under your ass, good. Determination is key. Best of luck to you.

Unity is a decent one.

[quote]till me how to create a game Engine from Scratch[/quote]Become ridiculously good at programming, geometry, trigonometry, calculus, working with matrices, working with vectors, and voodoo. Become ridiculously good at memorizing formulas. Become ridiculously good at translating formulas from the inconsistent mess of math notation to the standardized and structured heaven that is (or, at least, can be) code. Acquire the intellect of a demigod. Oh, and all that is just for the physics engine. @_@ ...Definitely go with a pre-made engine. [quote]where to get a good game Engine[/quote]I've heard good things about Unity. Don't worry about finding an engine that's as good as all the big names out there (Frostbite, CryEngine, etc.). Reading some developers remarks, I get the impression that many of the big-name engines are super-specialized and have to be directly modified to do anything they weren't originally meant to do. No one with any sense is going to be judging you by the standards of a major game development studio, so don't sweat it.

You need pylons

From scratch? Yeah good luck with that.

Idk about Unity, but Source IS also free.

The tools at our disposal is off the charts! [url=http://unity3d.com/unity/download]Unity[/url] for prototyping because it's very easy to get content up and functioning. Crytek, UDK are others.

Unity is the best one to use for beginners, otherwise there is no way you can create one yourself.