Getting 'EXTEND' Letters
This is done by blowing a bubble at the type of of bubble that burst ALL the other bubbles on the screen when you pop one. When you blow a bubble at that type of bubble it will first change colour and then if you do it again will become one of the letters to spell 'EXTEND'. If you keep doing this you will eventually spell the entire word and earn an extra life and skip the current level. The following combinations will give you the corresponding letter.
Red + Red = E
Red + Green = X
Green + Green = T
Green + Blue = E
Blue + Blue = N
Blue + Red = D
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