Multi Bingos: Completing multiple bingo varieties at the same time. Double Score: Using a double score booster and earning points during the allotted time. Penalties: Making an incorrect move, including tapping the bingo button if you don't have an available bingo.
Some players may also choose to shout "line" or "house" depending on the prize, whilst others choose to shout "house" for any win (including a line or two lines), players may use any other call to attract the caller's attention (should they wish).