how can you only have 64'918 (74'828 what ever) i squeezed out over 50'000 in a singel level with endurance mode with x3 multiplier... either this is a mistake or your strategy is not the best?!?
i guess there is no limit...
and a hint from me: skill up dual gem to the top and more mana per kill and more mana at the begin and cheaper gems thats all you need... if you have more skill take it on higher max damage, higher low damage and higher rate and higher range and traps are useless i never build them...
ahahah know i got it:
level 30 or so in normal mode:
monsters killed - 1358 !
monsters summond - 1010 !!!
2 level 9 gems at the end...
and a score of 15'138'440 without multiplicator...
worldrekord ;P
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