CodeDungeon is a simple text based adventure game I made in Java with a computer theme.
It's not particularly great but it is kind of fun to play if you want to kill some time.
It uses dialog boxes for input. Plus it is one of my first games.
It is completely free and open-source.

For any question feel free to ask!

Download the source and runnable .jar file from Google Drive here: http://tinyurl.com/CodeDungeon-Download

Also: To download from drive select File > Download.

I am currently working on making a project with libgdx. When I'm done I will post a link.

Thanks!

-Ironbizmark.