Technically, if you play a game on Xbox one that you played on the Xbox 360 then once you start playing you will get all the achievements (basically like double gamerpoints) but not in-game progress*.
*some games like happy wars and world of tanks etc. save in-game progress and achievements.
Yes! But not all. go to Xbox.com for a complete list of (original) games that are able to play on the Xbox 360
You can play some Xbox games on the 360 but on April 14th Microsoft will be ending that feature for Xbox live but you will still be able to play them off line. go to Xbox.com to find the list of games that you can play.
Yes, you are able to play All Xbox games on the Xbox 360 console. No u cant you cant play All xbox games on the xbox 360 u can play some but not the newer maddens and newer games.
No, unless you have a hard drive, any size will work. Most xbox games you will be able to play you can find the complete list of games you can play on xbox's website. If you have xbox live there are certain ones you can download for about 1200 Microsoft points [$15 dollars]
if it can play on the Xbox 360 then it should be able to go online
i dont see why not
Yes, but not all of the original XBOX games. You can either download the ones that are able to be played on the XBOX 360, or put in the disk to the games that are allowed to be played.
no the hardrive you plug into your xbox 360 can only be used to play music, films and pictures from the hardrive on your xbox 360 you can not play any games nor store any xbox 360 data on the hardrive.
no but you can play xbox games on an xbox360NO
Yes, Xbox 360 can play Xbox games.
Hacking your xbox is basicly changing the firmware of the diskdrive to be able to play backup games.
Yes you can play Xbox 360 games on the Xbox Original