All Side Hustle Ideas
Digital products

Self-published game development book

Wrote and self-published a book about a game framework. Earns a small monthly income from sales.

At a glance
Estimated by a classifier that read the source. The bar shows how sure it was.
Category
Digital products
82% sure
x
Earns from
One-time sales
95% sure
x
Startup cost (estimate)
$100 to $1kLow confidence
44% sure
x
Time it takes (estimate)
Hands-off
90% sure
x
Where
Online
98% sure
x
Coding
No coding needed
63% sure
x
Source
Hacker NewsComment by MegaLeon in “Ask HN: What was your best passive income in 2018?”, November 18, 2018