Six Flags is out for blood.

The first 60 people to donate blood Saturday will get free admission, the Austell theme park announced Friday. If you have a season pass and donate at the park, you’ll get a voucher for a free visit to a maze.

It also happens to be the opening weekend for Fright Fest.

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The spookiest time to be at Six Flags, the one-month of scary festivities runs until Halloween on select days.

There will be 16 mazes, along with "scare zones" and 30 rides altered to add a "sinister element," according to a news release.

Put 275 Riverside Parkway SW in your GPS ... IF YOU DARE.

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Check out a previous Fright Fest...

Walk thru haunted house at Six Flags Fright Fest