If you're always getting bored while waiting for a raid to start, then you might want to try out this little World of Warcraft add-on by Moongaze. It's called ShardGrid, and it's a simple game where the object is to move blocks of 'shards' around and line them all up vertically or horizontally.

To do that, just click on a shard and drag it up, down, left, or right one space. Repeat until all the shards are aligned horizontally or vertically according to their color types. Once that's done, you move on to the next round. Its as simple as that. Great for killing time.

This version of ShardGrid isn't the final one yet, and Moongaze is looking to add a menu system (with options), sound, scaleable window size, customizable game border colors, numbered scale support, an option for disabling animations, different winning conditions, bonus round, special tiles that have good or bad effects, and localization.

You install ShardGrid just like you would any other mod. Download the zip file and copy its contents into your Intereface/Addons directory, fire up World of Warcraft and enjoy.