The first book is only good when you don't want aoe.. which is almost never.
The second book deals the most damage of all nukes and is therefore a must.
The third book gives a nice aoe.. but only good when there are more then 3 targets within range.
So basically it is up to you

. The 2nd book of fire is without doubt a must, but the 1st+3rd books are optional.. as they are only usefull on rare occasions.
I'm maxing them all because I'm a perfectionist

. Hate to see that 'up' button when I'm looking at the skill list xD
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Quote:
Do not write stupid,when somebody loses.l lik the game myself but my 6jears old kid,who like to play games so much,has refuse to play,bcos of that word.Pls write something abit funny.l hope you consider my suggestion.Thank you and God bless you.
lol