Hero Roulette Calculator
Calculate expected rewards based on number of spins
Settings
Set how many spins you'd like to do. It's 1500 gems per single spin - 13,500 gems per 10-spin pack.
Event runs for 3 days with a daily limit of 150 spins (max 450 total).
Total Cost (12x 10-Spins): 💎 162,000
Quick Results
Expected Hero Shards: 
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Bonus Chests
One-time rewards unlocked at specific spin milestones (total: 115 bonus shards)
5 spins
+5 shards
15 spins
+10 shards
35 spins
+20 shards
70 spins
+30 shards
120 spins
+50 shards
Expected Results for 120 Spins
Click on an item to see its distribution chart below. Hero Shard totals include bonus chests.
Probability Distribution: Hero Shard
Shows expected total items (all variants combined) and 95% confidence interval over different spin counts
How It Works
The Hero Roulette calculator uses probability theory to estimate your rewards:
- Expected Value: The average number of items you'll receive over many attempts
- 95% Confidence Range: In 95% of cases, your actual results will fall within this range
- Standard Deviation: Measures how much variation to expect from the average
Note: These are statistical estimates. Actual results may vary due to random chance.
Item Probabilities
Hero Shard x5
Hero Shard x1
Mystery Pack x1
1h General Speedup x1
10,000 Hero XP x1
10K Iron x20
10K Stone x80
10K Wood x400
10K Bread x400