How We Grade Crypto Gambling Bonuses
A Great Bonus in 30 Seconds – TL;DR
Before we dive into the full scoring breakdown, here’s what actually makes a crypto bonus worth claiming:
✅ Low Wagering (Under 30x): You can actually cash out.
✅ Fair Game Access: You’re not forced into a low RTP slot just to play.
✅ No Sneaky Caps: You get to keep your winnings—no surprise limits.
✅ Non-Sticky Bonus: You can withdraw your own money if you win early.
Our Approach
Not all crypto casino bonuses are created equal. Some look generous at first glance, but hide brutal terms that make them worthless. That’s why we built a transparent, AI-powered grading system that filters out the noise and highlights bonuses that are actually usable.
Since no system is 100% objective, we use a custom algorithm that scores every bonus from 0 to 100 based on actual value—not hype. We regularly tweak the formula to reflect industry trends and player feedback.
🗓️ Last Updated: October 2025
Bonus Grading Criteria
Each bonus is rated using a data-driven AI algorithm that scores offers on a 100-point scale based on the following factors.
| Factor | Weight (%) | Description |
|---|---|---|
| Rollover Requirement | 30% | Lower rollovers score higher—bonuses with extreme wagering get penalized. |
| Eligible Games / Minimum Odds | 25% | Casino bonuses allowing fair game selection score higher, and sports bonuses with reasonable minimum odds receive better ratings. |
| Hidden Restrictions | 20% | Extra playthroughs, limited withdrawals, or deposit method restrictions lower the rating. |
| Expiry Date | 15% | More time to clear the bonus means a better score. |
| Bonus Size | 10% | Larger bonuses receive better scores, but only if other factors are fair. |
| Bonus/Deposit Ratio | 10% | Higher bonus amounts relative to the deposit required score better. |
| Minimum Deposit | 5% | Lower deposit requirements get better scores. |
Scoring Breakdown (0-100 Scale)
1. Rollover Requirement (30%)
| Rollover Requirement | Points |
|---|---|
| 20x or lower | 100 pts |
| 21x – 30x | 80 pts |
| 31x – 40x | 60 pts |
| 41x – 49x | 40 pts |
| 50x or more | 0 pts (Auto fail) |
2. Eligible Games (Casino) / Minimum Odds (Sports) (25%)
Casino Bonuses:
| Game Eligibility | Points |
|---|---|
| All games count equally | 100 pts |
| Most games count, but high RTP games are excluded | 80 pts |
| A limited number of casino games / sports count | 60 pts |
| Mostly high-house-edge games allowed | 40 pts |
| Very few games count towards rollover | 20 pts |
| Only 1 or 2 high-margin games count | 0 pts (Auto fail) |
Sports Bonuses (Minimum Odds Requirement):
| Minimum Odds Requirement | Points |
|---|---|
| Minimum odds 1.60 (-167) or lower | 100 pts |
| Minimum odds 1.61 – 2.00 | 80 pts |
| Minimum odds 2.01 – 2.99 | 60 pts |
| Minimum odds 3.00 – 3.99 | 40 pts |
| Minimum odds 4.00+ (+300) | 0 pts (Auto fail) |
3. Hidden Restrictions (20%)
| Restriction Severity | Points |
|---|---|
| No shady terms | 100 pts |
| Minor extra rollover on winnings | 80 pts |
| Deposit method restrictions | 60 pts |
| Extra playthrough required after winnings | 40 pts |
| Stacked restrictions that make withdrawal difficult | 20 pts |
| Bonus cannot be withdrawn at all | 0 pts (Auto fail) |
4. Expiry Date (15%)
| Time to Clear Bonus | Points |
|---|---|
| 30+ days | 100 pts |
| 15-29 days | 80 pts |
| 10-14 days | 60 pts |
| 7-9 days | 40 pts |
| 3-6 days | 20 pts |
| 48 hours or less | 0 pts (Auto fail) |
5. Bonus Size (10%)
| Bonus Amount | Points |
|---|---|
| $1,000+ | 100 pts |
| $500 – $999 | 80 pts |
| $200 – $499 | 60 pts |
| $100 – $199 | 40 pts |
| $50 – $99 | 20 pts |
| Below $50 | 0 pts |
6. Bonus/Deposit Ratio (10%)
| Ratio (Bonus / Deposit) | Points |
|---|---|
| 2x (200%) or higher | 100 pts |
| 1.5x – 1.99x | 80 pts |
| 1x – 1.49x (Standard match) | 60 pts |
| 0.5x – 0.99x (50% match) | 40 pts |
| Below 0.5x | 0 pts |
7. Minimum Deposit (5%)
| Minimum Deposit | Points |
|---|---|
| $10 or less | 100 pts |
| $11 – $25 | 80 pts |
| $26 – $50 | 60 pts |
| $51 – $100 | 40 pts |
| $101 – $200 | 20 pts |
| Above $200 | 0 pts (Auto fail) |
Final Score & Star Rating
Once all factors are calculated, the total score (out of 100) determines the star rating:
| Final Score | Star Rating |
|---|---|
| 85 – 100 | ⭐⭐⭐⭐⭐ (Excellent) |
| 70 – 84 | ⭐⭐⭐⭐ (Great) |
| 50 – 69 | ⭐⭐⭐ (Average) |
| 30 – 49 | ⭐⭐ (Below Average) |
| 0 – 29 | ⭐ (Bad – Avoid) |
Bonus Terms Demystified – Real Examples & Advice
Wagering Requirements: What They Really Mean
A 40x wagering requirement means you must bet 40× the bonus to unlock it.
Example:
Deposit $100 → Get $100 bonus → You must wager $4,000 before cashing out.
⚠️ Watch for the “Bonus + Deposit” Trap!
Some casinos apply rollover to both your deposit and bonus, doubling the total.
- Bonus Only (40x): $100 × 40 = $4,000
- Bonus + Deposit (40x): ($100 + $100) × 40 = $8,000 ⚠️
We penalize this under “Hidden Restrictions” as it’s one of the most misleading practices in crypto casinos.
Game Contribution: How Your Bets Count
|
Game |
Contribution |
|---|---|
|
🎰 Slots |
100% |
|
📼 Video Poker |
20% |
|
🎲 Roulette / Tables |
10% |
|
♠️ Live Blackjack |
5% |
|
🎥 Jackpot Slots |
0% |
A $100 bet on Blackjack? Only $5 counts toward your wagering…
Max Win Caps: The Hidden Ceiling
Some casinos cap your winnings—no matter how lucky you are.
Example:
Max win = 10× deposit
Deposit $50 → Win $1,000 → Only $500 is cashable. The rest is forfeited.
We reduce bonus scores when we see these types of caps.
Sticky vs. Non-Sticky Bonuses
Non-Sticky (Good): You play with your deposit first. Win early? You can withdraw without touching the bonus.
Sticky (Bad): The bonus attaches to your deposit. Even early wins get locked behind wagering.
We strongly favor non-sticky bonuses and flag sticky ones under Hidden Restrictions.
Final Score & Star Rating
|
Final Score |
Rating |
|---|---|
|
85 – 100 |
⭐⭐⭐⭐⭐ Excellent |
|
70 – 84 |
⭐⭐⭐⭐ Great |
|
50 – 69 |
⭐⭐⭐ Average |
|
30 – 49 |
⭐⭐ Below Average |
|
0 – 29 |
⭐ Bad – Avoid |
Why Our Bonus Rating System is Fair & Transparent
Unlike many casino review sites that rely on subjective opinions, our AI-powered grading system evaluates each offer objectively based on real value for players.
✅ Data-Driven – No hidden bias, just clear calculations.
✅ Focuses on Real Value – A huge bonus isn’t great if it has terrible terms.
✅ AI-Powered & Unbiased – Our algorithm analyzes bonuses without manual bias or favoritism.
We update our rankings daily to reflect any changes in bonus terms, ensuring you always get the best bonuses available. If we make any adjustments to our grading system, we will note them right here.
Looking for the best bonuses right now?
💬 Got Feedback? Join the Discussion!
Our AI-driven bonus grading system is constantly evolving! If you have feedback, suggestions, or ideas to improve it, join the discussion on Reddit and let us know what you think.. If you have questions, suggestions, or spot something we should improve, feel free to join the discussion on Reddit!
Author: Balazs Pal
Balazs is a co-founder of FreeCryptoBonus and a seasoned sports betting analyst with over a decade of experience in the NBA and MLB betting markets.
Having worked on both the sportsbook and affiliate sides of the iGaming industry, he brings deep market expertise and a no-nonsense approach to evaluating crypto betting bonuses. You can learn about his process in our bonus review methodology.
Outside of FreeCryptoBonus, Balazs also runs CoinBettors along with several niche tipster and non-English affiliate sites.