How many games can you download onto a 1TB Hdd?

That depends on the size of the game. No game is going to exceed 50gb for a while so you will be able to store at least 60-100 games depending on the size.

Let's put it this way, BF4 is around 30GB, 1TB = 1024GB. That will give you an idea on how many games you can install.

Actually Ducky is wrong. 1TB for Hard disks is measured in decimal bytes rather than base 2 meaning you really have about 930 GB after formatting and overhead.

Games range in size. For example Minecraft is under 100MB, a backup of Battlefield 4 is about 30GB though more like 60GB with all the DLC.

When you backup games from Origin create 7zip or RAR cabinets and split into 2-4GB chunks. Simply backing up the folder structure with create extra overhead on your file system.

Depends, each game has a different size, the new wolfenstein and titanfall are 50 whole gigs, but borderlands 2 is only 7. So there's no real answer but a TB should be more than enough for most people especially if your willing to delete old games after a while

Most other games are around 5-10 gb max

Depends on what system your talking about consoles or PC.