Osegi
Gaming·2 min read

Striker Kicking: Student Built a No.1 App Store Game With AI

A 21-year-old business student with no coding background built a football career game in about 50 days using ChatGPT and Codex. It topped Korea's paid App Store games.

A university student working on a laptop developing a mobile football simulation game with AI tools.
Image: zdnet.co.kr

A 21-year-old university student who had never programmed anything has put an AI-built football game at the top of Korea's paid App Store games chart. Choi Yo-ram, a first-year business student at Sahmyook University, needed about 50 days.

His game, "Striker Kicking: Toward the World Summit" (스트라이커 키우기), is a mobile simulation where you build a footballer's career. You train the player, then make choices at key moments in a match or play minigames. It reached number one in the paid games category in Korea without any ad spending. Choi promoted it on Threads and Instagram, and it also got attention on YouTube.

How was the AI-made football game built?

Choi used ChatGPT to split the work into stages and help with planning, Codex for programming and features, and ElevenLabs for music and sound effects. He designed the match situations and choices himself, because the AI's suggestions often did not match the experience he wanted. His own comparison: he was the planner and the AI was a developer on staff.

He had assumed a week would do it. It did not. He worked 14 to 15 hours a day at the end of summer break, and at least 8 hours a day once classes resumed. Minigames and balance tuning were the hardest parts, and balancing alone took one to two weeks. He learned to break requests into small steps and to test each new feature, since one addition could break another.

Reaction and what comes next

Not everyone liked it. Comments on a related YouTube Shorts video questioned charging money for an AI-made game and criticised its polish. On the App Store it holds 4.0 out of 5 from 143 ratings, with players asking for better balance and optimisation.

A Korean publisher has since offered to collaborate, and a global release is in preparation. Work includes improving the minigames, translation and server setup, and expansion to Taiwan and Southeast Asia is under discussion. Choi says he now wants to chase what he enjoys rather than simply look for a job after graduation.

Apps worth a look

SUMO: the number puzzle

Tap the right tiles, add them up, hit the target. Easy to learn, hard to master. Free, for all ages.

Tags:striker kickingai game developmentchatgptcodexapp storesouth korea

More from this day

See all →

More in: Gaming

See all →