Viral Growth Engine

Description

A configurable growth campaign engine with five battle-tested mechanics: (1) Invite-a-Friend — personalized referral links with muti-tier rewards (both inviter and invitee get coupons), progress tracker, and a leaderboard; (2) Group Buying (拼团) — countdown timer, participant avatars filling slots, price tiers based on group size, and share-to-WeChat-group deep links; (3) Lucky Wheel (大转盘) — spin-to-win with configurable prize pool, daily spin limits, and streak bonuses; (4) Red Packet (红包) — shareable cash red envelopes with random-amount splitting and withdrawal-to-wallet flow; (5) Poster Generation — one-click generate a personalized share poster with user's avatar, invite code QR, and campaign branding.

All campaigns are configured via a JSON schema — prize pool, reward rules, time limits, and eligibility criteria. Includes an analytics view per campaign: total participants, viral coefficient (K-factor), conversion rate from share to signup, and ROI calculation. Anti-fraud: duplicate device detection, IP-based rate limiting, and suspicious-activity flagging. Share tracking via UTM parameters and deep links.

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