hi this is my first post ever, so please don't go nuts if I say,do or suggest something wrong.
Now to the app, I think it would be cool if Alien Arena was portable.
Alien Arena is open source so i think its possible.
Here's the link to download alien arena: http://icculus.org/alienarena/rpa/aquire.html
I'm only 12 so don't ask me to do it my self because my programing skills aren't great.