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0 credits

Free play uses 1 credit per new game or continue. Reserved hours don't use credits.

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Free play is first come, first served, and right now new games and continues don't use credits.

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My Reservations

Your guaranteed hour: play as much as you like, no credits needed. Your private play link will appear here and in your email about an hour before your session starts. You'll need a computer with a keyboard.

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Get 5 Free Credits

Share BioStack and we'll add 5 credits once your post is approved.

  1. Post about BioStack on any public social media account. Tag @intactisbio and mention you got free credits for sharing (for example, #ad).
  2. Paste the link to your post below.
  3. We review it, usually within 2 business days, and add 5 credits once it's approved.

One share bonus per account. Your post needs to stay public until we've reviewed it.

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Credits have no cash value and can only be used in BioStack.

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free credits

Welcome to BioStack!

Your email is confirmed and your 3 free credits are in your account. BioStack is free to play: each new game or continue uses 1 credit.