Most people blame it on aliens but the knowledgeable ones know that the online casino is the reason behind the sounds. There are many neighborhoods which face a strange problem after midnight. Most buildings in such neighborhoods emit a strange alien type of sound and neighbors are worried that aliens from Mars are coming. They should not. It is the sound of the online casino that is making its presence felt all over the neighborhood. The people are discovering the wonderful world of virtual casinos and play throughout the night, especially during weekends.
These people know that no other stuff can provide the same entertainment value that the online casino does. They therefore settle down in front of their internet connected PC and log on to their favorite online gaming sites to play a few rounds of their favorite game. Though these people have planned to play for just an hour or so, the intoxication of the games are such that the players are not able to stop playing. The sounds that their neighbors are hearing are the simulated sound effects being produced by the games of the online casino.