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Gene Simmons says he knows KISS won't continue on indefinitely.  The blood-spitting bassist tells Sweden's Expressen TV that the time will come when the band has run its course and they're ready retire - eventually. 

Simmons says he believes KISS has at least a few more years left in them, but he's not sure the group will still be around a decade from now.  He's predicting the end will come within the next "five to ten years." 

KISS just launched the European leg of their 2013 Monster Tour in Stockholm Saturday night.  With the show the band introduced their new stage set featuring a giant, fire-throwing spider that crawls into the crowd.  Simmons credits frontman Paul Stanley with coming up with the spider idea, adding that all of KISS' great ideas have come from band members, not from outside designers. 

The band will follow their European trek with a series of Canadian dates.  They have one U.S. show set for July - Rock Fest in Cadott, Wisconsin on July 20th - along with several U.S. dates scheduled in August. 

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