iSimon says memory game

The duration of short-term memory is believed to be in the order of seconds. A commonly cited capacity is 7 ± 2 elements.
What does this mean? It means that on the average, a person can remember around 6-7 elements.
How this game can be fun and useful for your memory? Well, like any other activity, training your memory can result in longer duration of short-term memory!

The rules are simple: Watch the sequence and try to repeat it in the right order. On every round, the sequence will be longer by one element!
How far can you go?