I'm Gelo. I build games and apps that real people download, play, and love. 125K+ downloads. Two competition wins. Based in Turkey, working with the world.
I'm Ahmet — known online as Gelo. I'm a developer who doesn't wait for the right moment. I teach myself, build things, and ship them. That's been my approach since high school, and it's what turned a Unity passion project into a game with over 125,000 downloads.
I've built games for YouTubers with millions of subscribers, won national competitions in Turkey, collaborated with startups from pitch stage to product launch, and earned a perfect 5-star rating on my first freelance job. Every project I take on, I finish.
Currently freelancing on Upwork and Mostaql — available for game development, mobile apps, publishing, and anything that needs someone who genuinely cares about the craft.
I speak Arabic, Turkish, and English — which means I can work with clients across the Middle East, Turkey, and the rest of the world without friction.
Available for Unity game development, mobile app building, app store publishing, and project collaboration. Fast turnaround. Real results.
A passion project turned phenomenon. Built for the community around BanderitaX (20M+ subscribers), this adventure and puzzle game earned 125,000+ downloads and a 4.9-star rating on Google Play — with players still leaving glowing reviews years later. The game that started everything.
Cold-emailed Topz — a Saudi YouTuber with nearly 10 million subscribers — as a fan with a game proposal. He said yes. I built two separate games for him at different times. Each one was featured in a dedicated video, both exceeding 300,000 views — above his channel's typical performance.
Collaborated with a startup team to build an ad-free educational game platform for children aged 4–8. Published on both Google Play and the App Store. Won 1st place at TEKNOFEST — Turkey's largest technology festival — in the Educational Technologies category. Later selected by Microsoft for Startups.
A Duolingo-style Unity game teaching cyber security through gamified, interactive lessons. Built with Areplay Studio (Abdullah Dol & Muhammed Barutcu) after months of competing in hackathons, jams, and events together. Submitted and won 1st place at Medipol University Hackathon.
First paid freelance project on Mostaql: diagnosed and fixed a React Native app, then navigated the full Google Play submission process. Delivered in 2 days. Earned a 5-star review and 100% completion rate. Every track record has a first entry — this was mine.
Sherko, a game dev YouTuber, built and launched UpsideDown on Google Play but had no Apple Developer Account to publish on iOS. I stepped in, handled the full App Store submission process, and fixed AdMob monetisation issues along the way. The game now has 50,000+ Google Play downloads and 5,000+ iOS downloads — and Sherko made a dedicated video about it.
Got a game idea, an app to ship, or a project that needs someone who actually cares? I'm available and I respond fast.
ahmetkallo20@gmail.com →