Mega Millions is one of America’s premier multi-state lotteries, famous for record-breaking billion-dollar jackpots. This page details Mega Millions odds, rules, and offers a free online simulator.
Each play picks 5 of 70 white balls and 1 of 25 gold Mega Balls per $2 ticket. Draws occur twice weekly (Tue / Fri). There are 9 prize tiers.
Single-ticket odds for all 9 tiers (one standard play). Jackpot odds: 1 / 302,575,350.
| Tier | Match | Odds (1 in) | Prize |
|---|---|---|---|
| Jackpot | 5 white + Mega Ball | 1 / 302,575,350 | ¥400,000,000 |
| 2nd Prize | 5 white + 0 Mega Ball | 1 / 12,607,306 | ¥1,000,000 |
| 3rd Prize | 4 white + Mega Ball | 1 / 931,001 | ¥10,000 |
| 4th Prize | 4 white + 0 Mega Ball | 1 / 38,792 | ¥500 |
| 5th Prize | 3 white + Mega Ball | 1 / 14,547 | ¥200 |
| 6th Prize | 3 white + 0 Mega Ball | 1 / 606 | ¥10 |
| 7th Prize | 2 white + Mega Ball | 1 / 693 | ¥10 |
| 8th Prize | 1 white + Mega Ball | 1 / 89 | ¥4 |
| 9th Prize | Mega Ball only | 1 / 37 | ¥2 |
Long-run return rate ≈ 50% (including the average floating jackpot; a bigger jackpot raises it). Buying more covers more combinations, but per-bet expected value is unchanged.
Single-ticket jackpot odds are 1 / 302,575,350 (≈0.00000033%). It is one of the world’s rarest random events, akin to flipping 28 consecutive heads on a coin.
All draws here are locally simulated with pseudo-random numbers for educational purposes. No real money involved.
The simulator above keeps a rolling “draw ledger” and “life records” — these are generated by the local model, not real draws.
Prediction analysis: draws are strictly independent with ≈50% long-run expected return. The simulator realistically recreates bankroll drawdowns.