Apology Weekend
The Apology Weekend is a spontaneous event set up as compensation for a rollback. During the event, gem purchases are worth 25% more, and all players have a chance of getting a lucky drop when breaking blocks. These lucky drops are indicated by a small red flash, and they give the item itself, its seed, and a gem drop of a higher value than what one would usually find from the block. This bonus only applies to blocks which normally give out gems and drops.
In addition, a special item is usually available during these events to commemorate the work lost to the rollback prior. The Rollback Plaque and Rollback Plaque II were available for the first and second Apology Weekends respectively.
Only two Apology Weekends have been issued thus far: one for the weekend of February 23rd in 2013, and the other on the weekend of October 5th, 2013.