Core Scoring Logic (Fantasy Mode)

Rebellion’s Fantasy Mode transforms your portfolio performance into a Relative Score, ranked against all other participants in the same game. The system rewards outperformance over raw return, ensuring fairness across all market conditions.

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🔢 Scoring Process Overview

Each player builds a portfolio of 10 equally weighted assets. Your Relative Score is calculated in three steps:

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1️⃣ Portfolio Return

Your return is the sum of all asset performances, each weighted equally at 10%.

Portfolio Return = ∑ (10% × % Price Change of Each Asset)

• Assets with 0% price movement contribute 0%

• No custom weights, leverage, or sector bonuses in Fantasy Mode

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2️⃣ League Average (Universal Trimmed Mean)

To reduce the impact of outliers, all games use a trimmed mean:

• Remove the top 10% and bottom 10% of player portfolio returns

• Average the remaining 80% to get the League Average Return

For small leagues (e.g., 6–9 players), always remove 1 top and 1 bottom return.

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3️⃣ Relative Score

Your performance is compared to the trimmed league average:

Relative Score = (Your Portfolio Return − League Average) × 100

• Scores are rounded to the nearest whole number

• Positive = outperformance; Negative = underperformance

• No cap or floor

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🧪 Example

Game Setup:

• 10 equally weighted assets

• 7-day duration

Your Team Return:

Asset	% Change	Weight	Contribution
BTC	+5.0%	10%	+0.50%
ETH	+3.0%	10%	+0.30%
AAPL	+2.5%	10%	+0.25%
GLD	−1.0%	10%	−0.10%
SOL	+6.0%	10%	+0.60%
...	...	10%	...
Total Portfolio Return			+2.80%

League Average (Trimmed Mean): = +1.00%

Relative Score: = (2.80 − 1.00) × 100 = +180

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🏁 Ranking & Tie-Breakers

• Players are ranked by Relative Score

• Tie-breaker: earlier valid team submission

• Raw % return is visible for transparency but not used for ranking

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🔒 Important Clarification

• Relative Score is used for in-game ranking only

• XP (Experience Points) are awarded only in official daily/weekly games, based on final rank (see Leaderboard System for XP structure)

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💬 UI Tooltip

“Score = (Your Return − League Average) × 100. League average is trimmed to remove top/bottom 10% outliers.”