Growth Experiment Engine
Systematic framework for designing, running, and measuring growth experiments. Not marketing theory — specific experiment designs with measurement criteria.
Growth Model → references/growth-model.md
North Star metric, growth equation, funnel stages, leading indicators.
Viral Loops → references/viral-loops.md
Referral program design, viral coefficient (K-factor), invite mechanics, sharing triggers, network effects.
Activation Funnel → references/activation-funnel.md
New user → activated user optimization. Onboarding experiments, time-to-value reduction, aha moment identification.
Experiment Framework → references/experiment-framework.md
How to design, run, and measure growth experiments. Hypothesis format, sample size, duration, statistical significance.
Workflow
- Define the growth bottleneck (acquisition? activation? retention? referral?)
- Read the relevant reference file
- Design 3-5 experiments targeting the bottleneck
- Prioritize by ICE score (Impact × Confidence × Ease)
- Run experiments sequentially (not all at once)
- Measure, learn, iterate
Arena Growth Levers
- Acquisition: Community channels (Reddit, HN, Discord), SEO, word-of-mouth
- Activation: First challenge entered, first result viewed
- Retention: Daily challenges, streaks, ELO progression
- Referral: Shareable results, embeddable leaderboard widgets, "challenge a friend"
- Revenue: Streak freezes, premium features, tournament entry fees
1---2name: growth-experiment-engine3description: Design and run growth experiments for user acquisition, activation, retention, and viral loops. Use when planning referral programs, optimizing conversion funnels, designing viral mechanics, running A/B tests on growth levers, measuring CAC/LTV, or building product-led growth loops. Covers experiment design, viral coefficient optimization, referral program design, activation funnel optimization, and growth metric frameworks.4---56# Growth Experiment Engine78Systematic framework for designing, running, and measuring growth experiments. Not marketing theory — specific experiment designs with measurement criteria.910## Growth Model → references/growth-model.md11North Star metric, growth equation, funnel stages, leading indicators.1213## Viral Loops → references/viral-loops.md14Referral program design, viral coefficient (K-factor), invite mechanics, sharing triggers, network effects.1516## Activation Funnel → references/activation-funnel.md17New user → activated user optimization. Onboarding experiments, time-to-value reduction, aha moment identification.1819## Experiment Framework → references/experiment-framework.md20How to design, run, and measure growth experiments. Hypothesis format, sample size, duration, statistical significance.2122## Workflow23241. Define the growth bottleneck (acquisition? activation? retention? referral?)252. Read the relevant reference file263. Design 3-5 experiments targeting the bottleneck274. Prioritize by ICE score (Impact × Confidence × Ease)285. Run experiments sequentially (not all at once)296. Measure, learn, iterate3031## Arena Growth Levers32- **Acquisition:** Community channels (Reddit, HN, Discord), SEO, word-of-mouth33- **Activation:** First challenge entered, first result viewed34- **Retention:** Daily challenges, streaks, ELO progression35- **Referral:** Shareable results, embeddable leaderboard widgets, "challenge a friend"36- **Revenue:** Streak freezes, premium features, tournament entry fees
nickgallick