This is the 942nd most frequent Icelandic word.
tvisvar
Twice.
In this sentence, 'tvisvar' is used to indicate the number of times an action took place, emphasizing the frequency as 'two times'.
Ég fór í bíó tvisvar í síðustu viku.
I went to the cinema twice last week.
Here, 'tvisvar' signifies the repetition of an action, in this case, cooking, indicating that the process was done two times.
Hún eldaði tvisvar til að ljúka við réttinn.
She cooked twice to complete the dish.
In this instance, 'tvisvar' is used to describe the necessity of performing an action, playing the game, on two occasions to achieve clarity.