Big Mumbai Review 2025: Is it Real or Fake?
Big Mumbai WinGo is an online color prediction and gaming platform facing widespread accusations of fraud. This review investigates its legitimacy in 2025, considering its consistently low trust scores.

It’s crucial to understand that this platform is entirely distinct from J Kumar Infraprojects, a legitimate construction firm. J Kumar Infraprojects was previously barred by SEBI in 2017 for unrelated financial irregularities, but has no connection to the Big Mumbai WinGo app.
Operational Transparency and Rigged Claims
The platform lacks essential transparency, including hidden founders, no verifiable contact information, and an absence from major social media channels. Its domain, “bigmumbai.in,” is notably registered in Vietnam.
Users report consistent losses and suspicious game patterns, suggesting a manipulated or “rigged” algorithm designed to favor the platform. This lack of transparency extends to its algorithm’s operation and the inability to verify winners.
While no direct financial crime reports (like money laundering or PMLA violations) explicitly link to “Big Mumbai WinGo” in specified Indian financial news, its low trust score from Scamadviser flags it as a potential scam.
Navigating India’s Legal Landscape
Big Mumbai operates in a “legal grey area” in India. The country generally considers color prediction games and online betting illegal, with specific laws varying by state.
In August 2025, the Indian Parliament passed a sweeping bill banning online gambling, criminalizing the offering, promotion, and financing of such games. The Ministry of Electronics and Information Technology (MeitY) has also issued numerous blocking orders against illegal betting and gaming websites.
While no direct central government ban specifically targets “Big Mumbai WinGo,” police have busted similar cyber fraud rackets with international connections. These busts highlight broader concerns about illicit financial activities, even without direct PMLA or FEMA violation reports against Big Mumbai itself.
Financial Pitfalls and Deceptive Practices
Users report significant issues with deposits (frequently made via UPI and Google Pay) and withdrawals. These often result in unreceived funds, stuck transactions, or outright rejections.
The scam frequently leverages Telegram, where individuals posing as “teachers” or “mentors” lure victims with promises of high returns. These “teachers” guide victims to download fake apps, showing fabricated initial profits.
However, when users attempt to withdraw, they face demands for additional payments, such as “commissions” or “taxes,” leading to significant financial losses. Victims often find themselves unable to retrieve their invested money.
Big Mumbai: Red Flags
Here are key indicators suggesting Big Mumbai is a fraudulent scheme:
- Lack of Transparency: No public information on founders, contact details, or official social media presence.
- Rigged Games: User reports of consistent losses and suspicious game outcomes.
- Offshore Registration: Domain registered in Vietnam.
- Withdrawal Issues: Frequent reports of unreceived funds, stuck transactions, and rejection of withdrawal requests.
- Telegram Scams: Use of “teachers” or “mentors” on Telegram to lure victims and demand extra payments.
- Legal Scrutiny: Operates in a country where online betting is largely illegal and increasingly regulated.
Platform at a Glance: Real vs. Fake
| Feature | Legitimate Online Platform | Big Mumbai WinGo (Suspected Scam) |
|---|---|---|
| Founder Information | Publicly available, verifiable | Hidden, anonymous |
| Contact Information | Clear customer support, physical address | None provided, difficult to contact |
| Social Media Presence | Active, verified accounts | Absent or unofficial channels |
| Game Fairness | Regulated, audited algorithms | Perceived “rigged” games, consistent losses |
| Withdrawal Process | Smooth, timely, transparent fees | Funds stuck, rejections, hidden “commissions” |
| Regulatory Compliance | Licensed, adheres to local laws | Operates in a legal “grey area”, potential bans |
| Domain Registration | Local, transparent | Offshore (e.g., Vietnam) |
Our Verdict
Based on overwhelming user complaints, a profound lack of transparency, and its modus operandi resembling known cybercrime rackets, Big Mumbai appears to be a fraudulent scheme. It is not a legitimate gaming platform, and users should exercise extreme caution.
If you suspect you have been a victim of online fraud, report it immediately to the National Cyber Crime Reporting Portal at cybercrime.gov.in.
The Ministry of Home Affairs’ Cyber Wing also advises caution against frauds via gaming apps and suggests calling helpline 1930 in case of online fraud. The Reserve Bank of India also regularly updates its Alert List for unauthorized forex trading platforms, which sometimes includes platforms promoted via gaming apps.