Hey Product Hunt! 👋 I'm Gijs, an indie maker from the Netherlands.

Your birthday is the one day a year that feels like yours. Except about 22 million other people share it. So I built a game around one question: who gets to rule it?

How it works:

👑 Every day of the year has one throne. Only people born on that day can claim it, and the first claim is free.
⚔️ Anyone with the same birthday can dethrone you. Every conquest doubles the monthly rent for the next challenger (Free → $1 → $2 → $4…). Quiet thrones get cheaper again after 90 days, so no throne stays out of reach.

🏅 32 medals, from Day One King to Leap Year Legend. Every win becomes a story image or 6-second video you can share in one tap.

🎁 Gift a throne to a friend for their birthday, challenge friends with your own link, or put every birthday you follow in your calendar.

Where it stands today: players in 43 countries rule 179 of the 366 birthdays, and 187 thrones are still free.No app and no password: pick your date on bdaykings.com and you see who rules it in two seconds.

I'd love your honest feedback on two things:
1. Was it clear within 10 seconds what the game is?
2. Does the doubling rent feel fair, or would you change the rules?

Drop your birthday (just month and day) below and I'll tell you who rules it 👇