There's no limit to what you can create virtually, except your willingness to work hard and learn new things.
The Xbox 360 is one of a small handful of gaming consoles that dominate the modern video game world, and their games are considered some of the finest examples of virtual entertainment ever produced. To create these games, teams of experts in the fields of programming, sound engineering, graphic design and animation work nonstop for months (or longer) to execute the vision of the artistic director.
It's not impossible to build your own Xbox video game, it's just extremely hard; luckily, there are programs and communities designed specifically to help you.
Instructions
The Software
1. Download and install the C# Express Developer's Kit and the XNA Game Studio Express.
They're both built on the industry-standard C++ programming language, and are the only programs available to non-industry civilians capable of creating an Xbox game.
2. Download and install the XNA framework. It will allow you to test and troubleshoot your games during the creation process.
3. Test out both programs thoroughly before beginning the game creation process, especially the ability of the programs to save your work.
Programming the Game
4. Code a physics engine for your game with the C# Express software. The physics engine dictates how your characters will exist within your virtual universe, and what laws they will follow; gravity, inertia and all the rest are up to your interpretation.
If you're not familiar with the C++ programming language, educate yourself on it thoroughly with online tutorials or the more traditional how-to book.
5. Build models for your characters and objects. These are colorless, featureless 3D virtual cutouts of your heroes and villains (and any other characters) that you'll later use to populate your game.
This is also the time to build models for genre-specific objects, like the guns for the first-person shooter, or the sword your third-person action hero will wield.
6. Texture your characters and objects with either included XNA texturing material, or your own art. Spend some serious time on this part, as the visual elements of a game more often than not make or break a player's reaction to the game as a whole.
7. Animate your characters and objects according to their function within the game's environment.
Consider the most realistic approach to animation possible for maximum believability in your game. For example, a discharging weapon will shake, a charging four-legged animal often lowers its head when about to strike, and the view from human eyes tends to bob and weave while walking.
8. Build the different levels of your game. This includes the backdrop scenery, the interactive foreground scenery (like trees, water, rocks, doors, boxes, and the like), and any environmental effects like mist, clouds, rain, snow and so on.
Again, the more realistic your programming, the better the response from your players is likely to be. Watch how water or tree branches move in real-time while animating them to get the best possible effect.
Aesthetics, Sound and Finalization
9. Create or have an artist create for you the visual artistry of your game; everything visual in a game needs to be designed by an artist, including each and every character, weapon, vehicle, enemy, background, foreground, box and barrel.
Once you have your art, apply it to the appropriate areas in the programming to create the look of the game.
10. Find or record sound effects for each aspect of your game, and don't forget anything. Every footstep, door lock, weapon holster, enemy cry and electronic bleep needs to have its own voice provided by you.
Use high-quality sound effects for your game, as low-quality ones will distract the player from their immersion in your game.
11. Join the XNA Creator's Club. You'll be able to upload your game to their website to be tested out by other community members for playability and any bugging issues. Occasionally, homemade games like yours are chosen to be featured in big-time gaming venues like E3 and Game Informer Magazine.
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