So I looked on the internet and found instructions for installing Minecraft for Linux. I downloaded OpenJDK 7 from the software center, and got Minecraft from the official site. I checked "allow executing file as a program" under permissions in properties. I went to "Open with..." but I can't seem to find "OpenJDK 7".
I am completely clueless by now, and I am not sure what to do. I may be doing something wrong, or is there something I am missing?