Minecraft is the only game which I still play on my computer. Minecraft is unique since it is made in a platform-independent programming language called Java. To install it on Fedora 15, you need to get a bit more involved than normal. Reading my previous post about BASH shell scripts may help you out a bit.
First, install sun's java runtime environment here (http://www.java.com/en/download/manual.jsp) Go to the Linux section and download the RPM. When it is finished it can be installed with the software install tool or rpm. That's have the challenge down. Now go to www.minecraft.net and download minecraft.jar. You will notice that when you try to run this .jar file it opens with the archive manager instead. Here is when the slightly harder part comes in.
Go to the directory you have minecraft.jar saved in and make a new document called "Minecraft.sh". In the next few commands replace [path] with the path to Minecraft.jar. Open Minecraft.sh and enter the following:
java -jar [path]
save and close the file. Now make it executable by right clicking it and going to permissions, or using chmod +x from the command line. Double click the file and click "open in terminal". If the terminal opens and closes with quick succession, minecraft threw an exception. To find out what went wrong drag the Minecraft.sh file into a terminal that is already open and run it from there. Google the resulting text.
If everything did go according to plan, minecraft should start normally. If you enjoy mods, then you need to go back to step one and install jre 7 instead of jre 6. The reason I provided the jre 6 link is that it's considered the best option since most java developers are still using it to write their programs / mods.
There is an alternate, slightly more advanced route to launching minecraft. Go to your desktop and make the text document "minecraft" or whatever you want to name it. Now, copy this information but, once again, change [path] to where your minecraft is located. USER_NAME should be replaced with your username. That entire string should be replaced with a path to the picture.
Comment=A game about moving blocks and killing monsters.
Exec=java -jar [path]
When you are done, give the file a ".desktop" extension. This will directly launch the program with a double-click rather than asking you to run it. If you have permission to become root, you can copy this to /usr/share/applications or ~.local/share/applications. Now you can access it from programs like the gnome menu or any type of launcher for even quicker access.
The content in this post is public property