Mu spore question

[Yqatuba]

Something I've always thought was odd: in the book it says the CR 21, 100 foot long Mu Spores they give the stats for are the smallest(!) of their kind, which makes me wonder, how big can they get? and what CR would the biggest ones be (assuming they even have stats. I would assume if they are as big as mountains or asteroids they probably don't.)

[WagnerSika]

I imagine the bigger ones just have templates like advanced, giant etc. so the CR depends entirely on the GM.

[Bjørn Røyrvik]

I wonder if the designer of the mu spore (at least the Pf version) was a fan of Doctor Who

[CorvusMask]

Well if you want to be literal, the 1e version takes 30 by 30 feet space while in 2e they take 50 by 50 feet space :D So you could technically do math based on that, if 30 by 30 feet version is in fact 100 foot long, how much of increase 50 by 50 would be.