To celebrate Halloween, we're giving away a $500 Walmart gift card to one lucky Neuro Rewards member — plus three runner-up prizes of $100 each.

Here's the trick-free part: Create your free rewards account between October 1-9 and you're in — no purchase necessary. If you're already a Neuro Rewards member, log in to your account and you're automatically entered.

Neuro is available at Walmart in the Vitamin & Supplement aisle  — snag some good energy while you're stocking up on spooky-season essentials.

See Official Rules for eligibility, odds, and entry details.