over the computer
A company that makes video games.
If you think you have a really great idea the best thing to do is patent it first. Then you can try to submit it to company's without worry of your great ideas being stolen. Short answer: It's possible.
Cauldron - video game company - was created in 1996.
Cauldron - video game company -'s population is 64.
MTO - video game company -'s population is 15.
MTO - video game company - was created in 1996-05.
You can simply upload a video to a video hosting site such as Youtube, or more specifically upload it to machinima or any other game specific video game video hoster.
I would send your idea to a small off brand company, but you could try sending it to one of the big companies such as Bungie, Nintendo, or Infinity Ward
Game stores buy their video games from the video game manufacturer's company.
A company that is making a video game would need a knowledgeable programmer, a computer, and an idea for a fun game.
Bally Midway
A video game company