> For the complete documentation index, see [llms.txt](https://metacollabwin.gitbook.io/metacollabwin-documentation-center/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://metacollabwin.gitbook.io/metacollabwin-documentation-center/blind-box-pre-sale-rules/pre-sale-rules.md).

# Pre-sale rules：

Invite your friends to join MetaCollabWin, and you both will receive rewards: the buyer will get a 5% discount reward, and the referrer will receive a 5% BNB reward.

Based on the end date of the presale, the top ten users with the highest number of valid referrals will share a 3% BNB reward from the presale total fund pool: the first-place winner will receive 1% of the total fund pool in BNB, the second to fourth-place winners will share 1% of the total fund pool in BNB, and the fifth to tenth-place winners will share 1% of the total fund pool in BNB.

Note: At least mint 1 Land Blind Box to be considered a valid referral.