OP here:

A couple of weeks ago I shared my web game "Hole Punch" with you, in which you sling a spaceship around gravitational fields: https://news.ycombinator.com/item?id=49946393

It was much more successful than I'd imagined, staying on the homepage for a couple of days. Friends & family messaged to tell me they'd seen it and how addictive they found playing it.

I've since ported the game to iOS, where I've been able to develop the mobile interactions a bit better. It has more free levels (and another 35 behind a £4 paywall). It's my first iOS game so please go easy on me.

I really hope you enjoy playing it as much as you did the web version!