techstapel
Inspiration

Mobile game

Harpagia

Text-based idle RPG where players level skills, battle monsters and collect loot while away.

Visit Harpagia

Revenue (self-reported)

$155K/year (over $10K/month)

Solo developer; no paid marketing

How it started

Ken spent 12 years in big tech (software engineer at Amazon, engineering manager at Meta) and hadn't coded in four years when AI tools took off in early 2024. He built a simple card game (Big 2 Wild) in about six weeks to learn shipping end to end, then built Harpagia for fans of incremental games like RuneScape, launching while still employed. With no audience or marketing budget, a single Reddit post took revenue from ~$1K to over $10K/month, and Reddit posting remained his main growth channel.

Tools they use

React NativeDiscordUnity Asset StoreGamedev MarketReddit

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Founders

  • Ken · Founder / Solo developer

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