High iGaming traffic doesn’t equal profit – without proper tracking and optimization, budgets drain fast. This case study shows how to turn betting traffic in India into real ROI with a data-driven setup. Discover the exact strategy behind 598 conversions and 131% ROI in just 12 days.
India is one of the most promising markets for betting advertisers right now – massive mobile reach, strong interest in sports, and the scale needed to grow fast. But in this highly competitive vertical, iGaming traffic alone is never enough: what matters is how you buy it, how you track it, and how fast you optimize.
In this case study, we show how a betting advertiser used HilltopAds Popunder Mobile traffic to turn India into a profitable GEO. We’ll walk through the logic behind the setup, explain why postback tracking was essential, and show how the campaign reached598 conversions with 131% ROI in just 12 days.
Let’s break down what made this campaign work.
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iGaming in 2026
The iGaming industry in 2026 is exploding with growth. By this year, the global online gambling market is projected to surpass $100 billion in revenue, maintaining a double-digit annual growth rate. This surge is fueled by expanding legalization, a wave of mobile-first users, and the popularity of live-betting formats.
For advertisers and affiliates, iGaming’s appeal isn’t just its size – it’s the high lifetime value (LTV) of users. Online casinos and sportsbooks can earn substantial revenue from each player over time through repeat bets, loyalty programs, and cross-selling.
In practical terms, a single avid bettor might be worth hundreds or even thousands of dollars in net revenue over their active lifespan. Such high LTV means operators are willing to invest heavily to acquire quality players, resulting in attractive payouts for affiliates who can deliver converting traffic.
However, big rewards attract big competition. The iGaming arena has become fiercely competitive in recent years. Dozens of brands and countless affiliates are vying for the same bettors, especially in lucrative segments like sports betting and online casinos.
New offers and bonuses appear constantly, and aggressive marketing is the norm – from VIP deposit matches to targeted ads during major sporting events. In this environment, running a profitable campaign requires sharp strategy. Affiliates need to choose their GEOs and traffic sources wisely, craft compelling creatives or flows, and optimize relentlessly.
The upside is clear: with the right approach, the iGaming vertical can be extremely profitable and remains one of the fastest-growing segments of the digital economy. But breaking through the noise demands expertise in both marketing and optimization technology. This case study demonstrates how combining a booming niche with smart tactics – and the right traffic partner – can yield exceptional ROI even amidst intense competition.
We recommend checking out our latest article on the best traffic sources for CPA offers:
Why India Is a Key GEO for iGaming
India has emerged as a key growth market for online betting. The country is home to the largest base of cricket fans in the world – about 90% of the 2+ billion global cricket followers are in India. This deep-rooted sports passion naturally extends to wagering.
Despite regulatory grey areas, millions of Indian users engage with sports prediction and betting platforms, especially during cricket tournaments. Culturally, sports betting (notably on cricket matches) has become a popular pastime, tapping into the nation’s love of the game. This means any betting offer related to cricket or major sports has a massive, eager audience in India almost by default.
Crucially, India’s digital infrastructure has caught up with this enthusiasm. The country’s internet user base is predominantly mobile-first, with hundreds of millions of smartphone users streaming matches and using apps daily. In recent years, the widespread adoption of instant online payments has supercharged iGaming participation.
The rollout of the Unified Payments Interface (UPI) made depositing money into betting apps seamless – what used to take hours or involve cumbersome bank transfers can now happen in seconds on a phone. Virtually every Indian smartphone user is familiar with UPI apps like Google Pay, PhonePe, Paytm, etc., which lowers the barrier to try online betting platforms. This convergence of a huge mobile audience, passion for sports, and easy digital payments has led to staggering market growth.
Consider the numbers: India’s sports betting market generated over $4.1 billion in revenue in 2024, and it’s projected to more than double to $8.8 billion by 2030. That kind of growth (the fastest in the Asia-Pacific region) signals a huge opportunity for advertisers. What’s more, the official figures likely undercount the real volume, as many users still bet through offshore or informal channels.
All this means that affiliate marketers who can operate in India – with the right offer and compliant approach – are tapping into one of the world’s largest pools of prospective bettors. In our campaign’s case, focusing on India made perfect sense: a cricket-related betting offer, delivered to a cricket-crazy mobile audience, in a country where digital betting is booming. It’s an environment ripe for high volume and, with smart targeting, high conversion rates.
Buy iGaming traffic with HilltopAds and get:
- Advanced targeting options
- Direct traffic sources
- Self-serve platform
- Fully-managed service
- Postback tracking
General Settings for an Ad Campaign on the HilltopAds Platform
Before you can start your advertising campaign on HilltopAds, you’ll need to sign up as an advertiser. You can register through this link.
- Go to the Manage Campaigns section in your HilltopAds dashboard.
- Click the Add Campaign button.
- In the campaign creation form, select the Popunder mobile ad format.
- In the Traffic Channels section, pick Mainstream High and Medium Activity.
Another important setting was Frequency Capping. For betting campaigns, this helps control exposure and avoid burning out the audience too quickly. Depending on the traffic flow and campaign goals, effective options can include 1/12, 3/12, or 1/24. Next, we set the necessary targeting settings for the campaign.
GEO – India
Since the offer was focused on Indian bettors, we targeted India only. This ensured that all impressions were delivered to users in the exact market we wanted to reach.
Browser – Chrome, Firefox, Internet Explorer, Edge, Opera, Safari, Android, Samsung Browser
These browsers account for the overwhelming majority of India’s mobile web traffic. By including all major browser environments, we made sure the campaign could reach users across a wide range of devices and browsing habits, without cutting off potentially valuable segments.
OS – iOS, Android
OS Version – Android 6-16, iOS 10-26
Device Type – Mobile / Smartphone
Proxy – Disallow
WebView – Allow
We disabled proxy traffic to reduce the chance of low-quality or suspicious visits. At the same time, we kept WebView traffic enabled, since many Indian users interact with content through in-app browsers. This helped us preserve scale while maintaining control over traffic quality.
Another important part of the setup was the daily impressions cap. For this campaign, we set a limit of 150,000 impressions per day. This helped us keep spending predictable, gather enough data for optimization, and avoid pushing too aggressively too early. We started with this cap for controlled testing, and then scaled it up once the campaign began showing positive ROI.
Just as important, postback tracking had to be set up from day one. For iGaming campaigns, this step is not optional. Without postback, you can’t clearly see which sources are driving conversions, which means you can’t optimize properly or keep CPA under control. We’ll break down the role of postback tracking in more detail in the next section.
Postback tracking also made it possible to use auto-rules more effectively. In practice, this means advertisers can optimize traffic either by setting rules based on eCPA or by using conversion volume thresholds for each source.
The final step before launching the campaign was setting our bid (CPM). For this campaign, we set a $0.20 CPM bid, which allowed us to secure steady mobile traffic in India while keeping costs under control and leaving enough room for optimization.
Helena
HilltopAds Senior Advertising Manager, focusing on gambling traffic nuance
For iGaming campaigns, especially in large-volume GEOs, I’d recommend combining accurate postback tracking with flexible traffic segmentation and clear auto-rules. You can start with High, Medium, or even broader traffic if postback is in place – then optimize faster using eCPA or source-level conversion thresholds. And don’t underestimate settings like frequency capping and local-language alignment: small adjustments there can make a real difference.
Postback Tracking: The Core of Optimization
From day one, we enabled server-to-server postback tracking for the campaign. Every time the offer generated a conversion – in this case, a registration or deposit on the betting site – that data was automatically sent back to HilltopAds and our tracker. We set up the postback URL using HilltopAds macros for click ID and zone ID, which allowed us to tie each conversion to the exact traffic source.
That level of tracking was essential. Instead of looking at conversions in aggregate, we could see which specific zones were driving results, how much they were spending, and what their effective CPA looked like. This gave us the ability to optimize with much more precision.We’ll cover the logic here, but if you need the technical side in more detail, our Help Centre guide on S2S Popunder integration with HilltopAds walks through the setup step by step:
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Why HilltopAds Was the Perfect Fit
This campaign worked because we had the right mix of quality traffic, optimization tools, and hands-on support from the very beginning. In betting, that combination matters a lot. Volume alone is never enough – you need traffic that can actually convert, tools that help you react fast, and enough scale to grow once you find what works.
Traffic Quality
We weren’t dealing with fake clicks, bot-heavy sources, or traffic that looked good only on paper. We were working with real users, and that made a huge difference from day one. In a betting campaign, every impression needs to have real potential – otherwise, even strong optimization won’t save the numbers. Because we filtered out proxy traffic and focused on cleaner sources, we could spend less time fighting junk traffic and more time improving performance.
Control
With HilltopAds, we could see performance at the zone level, use postback data to understand which sources were actually converting, and react quickly. That meant building whitelists around strong sources, cutting weak zones faster, and using auto-rules to avoid wasting budget. In practice, it gave us the flexibility to optimize manually when needed – and the automation to keep things moving in the background.
Room to Scale
Once the campaign started showing strong numbers, we didn’t have to wonder whether the platform could handle more volume. We already had the reach, the infrastructure, and the support in place. Our managers stayed involved, helped with optimization decisions, and made it easier to move faster without losing control of quality.
That’s really what made the difference here. We didn’t just bring traffic to the offer – we built the campaign on a setup that could test, optimize, and scale in a reliable way. And for a vertical like betting, that’s exactly what you need.
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Optimization Approach
Launching the campaign was only the beginning – the real work happened during optimization. Over the 12-day run, we combined automated rules with daily manual analysis to keep performance on track and ROI above target.
At the start, we kept the campaign controlled: a 150,000 daily impressions cap and a conservative $0.20 CPM helped us gather data without overspending. Once we saw positive signals, we gradually increased the cap to scale more aggressively. We also adjusted bids when needed – raising CPM slightly if volume dropped, or lowering it if ROI started to soften.
We used both manual and automatic optimization. On the automated side, we set rules to cut off weak sources fast – for example, zones that spent budget without converting or sources where eCPA moved above target. On the manual side, we reviewed performance by zone, OS version, browser, and time of day. This helped us quickly identify what was working and what needed to be reduced or removed.
We also refined the campaign beyond traffic sources alone. Midway through the run, we tested small changes on the landing page – including different messaging and bonus-focused angles – and shifted budget toward the better-performing version. Combined with source-level optimization, these adjustments helped improve overall efficiency.
In short, the campaign was never left on autopilot. We tested broadly, reacted fast, and continuously pushed budget toward the strongest traffic slices. That steady optimization is what turned a broad betting launch into a profitable campaign.
Check out our recent article on how to create gambling creatives:
Campaign Results
By the end of its 12-day run, the campaign had delivered approximately 2.38 million impressions and generated 598 conversions at an average eCPA of about $0.79. Total ad spend reached $475.28, and with an ROI of 131%, the campaign returned more than double the initial investment. In simple terms, every $1 spent brought back $2.31, showing how effective targeting and ongoing optimization turned a controlled budget into a highly profitable result.
Below is a breakdown of the key daily metrics from February 15 to 26:
The performance trend was steady and easy to follow: as the campaign gathered data and optimization kicked in, we gradually increased impression volume from 149,825 to 249,673 per day. At the same time, conversions grew from 38 to 63 a day, showing that the campaign was scaling in a controlled way rather than just buying more traffic for the sake of volume.
Just as importantly, eCPA remained extremely efficient throughout the entire run, staying in the $0.79-$0.80 range and remaining far below the $2 target. That kind of consistency matters, because it shows that performance held up even as traffic volume increased day by day.
In the end, the campaign didn’t just produce strong numbers on paper – it proved that with the right GEO, the right traffic source, accurate postback tracking, and disciplined optimization, a betting offer can scale smoothly and stay profitable at the same time.
Bonuses and Tools for Direct iGaming Advertisers
For direct iGaming advertisers, we offer more than just traffic. We also give you extra tools and support that can make testing faster, safer, and more efficient from day one.
One of the biggest advantages is our bonus program for direct iGaming advertisers. Extra credit on your first deposit gives you more room to test, optimize, and scale without putting all the pressure on your starting budget. In practice, that extra runway can make a real difference when you’re trying to find a profitable setup.
We also help direct advertisers with ready-made whitelist and blacklist recommendations. Because we’ve seen how different traffic sources perform across iGaming campaigns, we can point you toward stronger zones faster and help you avoid placements that tend to waste budget. That means less blind testing and a shorter path to useful data.
On top of that, our Auto-Optimization tools make day-to-day management easier. Instead of watching every source manually, you can use rules to cut weak traffic automatically and keep the campaign cleaner while you focus on strategy, creatives, and scaling.And finally, every direct advertiser works with a personal account manager.
That matters a lot in iGaming, where small setup changes can have a big impact on ROI. When you combine bonus support, optimization tools, whitelist/blacklist guidance, and real human expertise, you get more than traffic – you get a setup that helps you move faster and make better decisions.
Check out more success stories from our advertisers:
Popunders to Profit: Inside a Non-mainstream Gaming campaign’s 64% ROI Breakthrough – Hilltopads blog
Conclusion
This case shows what a strong iGaming setup can do when the fundamentals are right. With the right GEO, a mobile-first format, accurate postback tracking, and constant optimization, we were able to deliver 598 conversions and 131% ROI in just 12 days.
The biggest takeaway is simple: in betting, volume alone is never enough. What matters is how well you control the iGaming traffic, how clearly you measure performance, and how quickly you react to the data. That’s exactly where we made the difference in this campaign – providing the traffic, the tools, and the support needed to test, optimize, and scale with confidence.
And that’s what makes this approach repeatable. If you’re running betting or other iGaming offers, the combination of strong tracking, smart optimization, and reliable traffic can turn a broad campaign launch into a profitable one. With the right setup, India can be more than just a high-volume GEO – it can become a strong source of sustainable growth.