no
To download it from the website you need internet connection of course but once it has been downloaded you can play in singleplayer with no internet. To play on a multiplayer server you do need to have internet.
Yes
The ethernet is required to connect to the internet. Xbox requires an internet connection to play games online and download content.
You need an internet connection and a Playstation Network Account if you mean the Playstation Store
When you download the game after buying it, you have to sign in in order to play on multiplayer servers. However, you can still play the game without signing in to a valid account and play single player.
Because you are probably using the streaming feature of limewire. This needs an internet connection. If you want to play music from limewire offline then you need to download the music rather than stream it.
You need an internet connection to play online only
In Age of Empires 3, you only need an internet connection if you want to play with other people online with an ESO (Ensemble Studios Online) account. To play single player skirmishes and/or campaigns, you do not need an internet connection.
Nope You will have to have the internet to download games to the iPad, but most can be played without a internet connection.
You can purchase games from the PlayStation Store and then Download and Play them if you have an internet connection and a PlayStation account.
YES
It only needs internet connection if you are going to be playing online. If you are just playing campign mode you do not need internet connection.