If it was a team effort, we may use "Contributed to development of an iOS game that earned $10M in revenue.".
If it was an individual effort, the bullet I wrote earlier could included a term to clarify that, like "Independently...".
As for 'us on HN', about 100 HN users hire me every year. I even have a discount code for HN users on my HN page here (I got 3 HN orders in the past two days, probably from people reading this thread). I'm familiar with how to write accomplishments on resumes, for HN users and others.