Payment Methods
Ways to buy Gold Coins and redeem Sweeps Coins.
- ACH Bank Transfer
1 min read
Zonko is a sweepstakes casino operated by Mamba Limited, established in 2026, offering Slots via a dual-currency system (Gold Coins + Sweeps Coins). Available in multiple US states with a 3.1/5 editorial rating from SweepState.
Rating based on SweepState editorial review
Is Zonko legit?
Zonko is a sweepstakes casino launched in 2026 by Mamba Limited. Verdict: legit (new). Strength: straightforward sweepstakes model without gimmicks. Weakness: 100 SC minimum redemption is much higher than Chumba Casino or WOW Vegas (50 SC); operator is very new. Available in 40 US states. Rated 3.7/5 on SweepState; verified April 18, 2026.
Zonko at a glance
| Operator | Mamba Limited |
|---|---|
| Established | 2026 |
| SweepState Rating | 3.1/5 |
| Min Redemption | 100 SC (~$100) |
| Crypto Redemptions | Not accepted |
| Not Available In | 12 US states |
| Last Verified | March 5, 2026 |
Affiliate Disclosure: This page contains affiliate links. If you register through one of them, we may earn a commission at no extra cost to you. Compensation does not set our ratings, review conclusions, or inclusion decisions.
Offer Summary
Welcome Bonus
3K GCFirst Purchase
112K GC + 75 SC for $20Min Cashout
100 SC (~$100)Payment Methods
ACH Bank Transfer
Offer details can change. Confirm the latest terms, purchase packages, and redemption rules with the operator before you play.
Details
Redemption Methods
How you can cash out Sweeps Coins.
- ACH Bank Transfer
Game Types
Available game categories.
- Slots
78%
Players who access sweepstakes casinos via mobile devices
Source: American Gaming Association (2025)
S
Reviewed by SweepState Editorial Team
SweepState's editorial team documents operator terms, state-availability changes, and player-facing policies using a published methodology and source-first review process.
Published methodologyState availability trackingSource-first review
Published: March 1, 2026
Last reviewed: March 5, 2026
Fact checked: March 5, 2026
Last updated: April 18, 2026
Methodology: We may use direct testing where available and document the account, product, redemption, and support experience before we publish or revise a page. Official operator terms, support responses, and relevant public or regulatory sources are used as supporting evidence. Public user reports may trigger follow-up review, but they do not replace source-backed verification. Read our full review methodology.
Verified Facts
Factual details supported by SweepState review metadata, database fields, or direct testing notes.
- Operator: Mamba Limited
- Established: 2026
- SweepState rating: 3.1/5
- Game types listed: Slots
Operator-Claimed Details
These details come from the operator's current terms, product pages, or help content and can change without notice.
- Offer currently promoted: 3K GC
- Quoted payout timing: Up to 10 business days
- Listed payment or redemption methods: ACH Bank Transfer
- Terms and conditions page is available.
More Options
Similar Sweepstakes Casinos
Explore other reviewed operators with comparable bonuses and gameplay.
TOP PICK
1
2
3
4
5
6
7
8
Sites Like Zonko
Compare Zonko with similar sweepstakes casinos rated by our team.
Share
Share this casino
Learn More
Related Guides
Explore our guides for more detail on sweepstakes casino play, bonuses, and redemptions.
Getting Started Guide
New to sweepstakes casinos? Learn the basics of account setup, first purchases, and game selection.
How Sweepstakes Casinos Work
Understand the dual-currency system, legal framework, and how to win real money.
Bonuses & Promotions Guide
Maximize your value with welcome bonuses, daily rewards, and promotional offers.
Safety & Security Guide
Learn how to identify legitimate casinos and protect your personal information.
State Legality Map
Check sweepstakes casino legality by state with our interactive US map.
Compare Casinos
Compare bonuses, games, and features side-by-side to find the best fit.
Explore
Related Resources
No Deposit Bonuses
Explore no deposit bonuses at top casinos
Texas Sweepstakes CasinosFind sweepstakes casinos available in Texas
Florida Sweepstakes CasinosFind sweepstakes casinos available in Florida
New York Sweepstakes CasinosFind sweepstakes casinos available in New York
Sweepstakes SlotsPlay sweepstakes slots at sweepstakes casinos
How Sweepstakes Casinos WorkLearn about how sweepstakes casinos work
Our review methodology
We may use direct testing where available and document the account, product, redemption, and support experience before we publish or revise a page.
Ratings and state notes follow our published methodology, which may include operator-term review, source checks, redemption evidence status, support review, and direct testing where available.
1
Account and terms review
We create accounts where possible, confirm eligibility checks, and compare advertised offers with the operator's published terms and on-site flows.
What we check: registration flow and identity prompts, bonus amounts, limits, and stated conditions, age and location controls
2
Product and user-experience testing
We test core product paths, game access, and mobile usability to see how the site works in regular use rather than relying on marketing summaries.
What we test: game access and navigation, mobile and desktop usability, clarity of core product information
3
Redemption and payment verification
We document payment methods, request redemptions where possible, and compare the results with the operator's stated timelines and thresholds.
What we verify: available redemption methods, minimum cash-out thresholds, processing time against stated timelines
4
Support and issue handling
We contact support channels directly and note response time, clarity, and whether answers match published terms and account behavior.
What we record: channel availability, response quality, consistency between support answers and published terms
5
Compliance and source review
We review state availability, responsible-play tools, policy changes, and public or regulatory materials that materially affect the page.
What we compare: state availability statements, responsible-play and disclosure surfaces, public or regulatory source support
Trust & Transparency
How We Rate
Our ratings are based on star rating, bonus value, payment speed, and player feedback.
Read our methodologyPlay Responsibly
Sweepstakes casinos are for entertainment only. Set limits and play within your means.
Affiliate disclosure
SweepState contains affiliate links. When you register through them, we may earn a commission at no additional cost to you. That revenue supports editorial work, direct testing, and site maintenance. Affiliate relationships do not purchase rankings, review conclusions, or page placement.
Ratings and state notes follow our published methodology, which may include operator-term review, source checks, redemption evidence status, support review, and direct testing where available.
Read full disclosureResponsible play
Sweepstakes play should be treated as entertainment. If play is affecting your finances, time, or wellbeing, use the responsible-play resources linked below.
For help, call 1-800-522-4700 or use our responsible-play resources page.
National Problem Gambling Helpline:1-800-522-4700
Age requirement: You must meet the minimum age requirement in your state to participate. No purchase necessary to play.
Sweepstakes Casino Disclaimer: Sweepstakes casino availability varies by state and by operator. No purchase is necessary to participate in the sweepstakes model. Players may obtain free Sweeps Coins through daily login bonuses, mail-in requests, or promotional giveaways when those methods are offered.
Zonko is a sweepstakes casino platform. Gold Coins have no monetary value and are for entertainment only. Sweeps Coins can be redeemed for prizes where operator terms and local rules permit it.
Eligibility: Must be 18+ (21+ in most states) to participate. Not currently available in California, New York, and Washington, among others. Additional restrictions may apply based on your location.
Responsible Gaming: If you or someone you know has a gambling problem, call 1-800-522-4700 (National Problem Gambling Helpline). Learn about responsible play.
Affiliate Disclosure: This page contains affiliate links. We may earn a commission at no extra cost to you.