<p>I think the probability is not so low, because the original VN, can be done in 30 hours and the adaptation take 24 episodes, but S;G 0 take 50 hours so an adaptation can be a 36 episode lenght if they want to successfuly adapt all the main parts and contenting the fans.
</p><p>And on a side note i think, if they don't totally screw up, this adaptation will be a huge success if we look only at the aura of the Steins;Gate works. The Steins gate 0 VN was a best seller and both original anime and VN are very well knowed for their extremly good quality. The financial risk isn't so strong for a directly 36 episode lenght anime.
</p><p>To summarize, I know it's rare nowadays but i think steins;gate have all the key points to be an exception and i'll be worried if it isn't 36 in fact.
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