Great game, though the controls on mobile are a bit too imprecise.

As you drag a hole, the size widgets should disappear so you can better see what's around it. They could pop back up again once you're done dragging.

Personally I'd rather if you had to press a button or something (or long press?) to add a new hole. I keep accidentally adding new ones when all I want to do is adjust an existing one.

Also spamming the user with the help screen right off the bat is a bit much. As long as they know it's there and can pull it up / dismiss it, I think it would be more fun to sort of discover the game mechanics yourself.

Note several of the first 8 or so levels can be accomplished with a single minimum (8) sized black hole. Eg. I liked the simplicity of doing that on level 6.

Well, this is strangely familiar to a game I just vibe-coded recently!

https://www.michaelfogleman.com/gravity-assist/

This is the year of old browser (and/or flash) games making a comeback in some form.

Fun idea, but kind of maddening that I can click and hold to add mass to a hole but if i overshoot, i can't do anything subtract mass or delete a hole.

Loved it! Played all 20 levels

Some missions have mass budget so large it seems to imply a "go fast, crash fast" solutions, but there's no time-of-flight score :(

ha, now I want to see a leaderboard, with players' score distribution (mass/holes/time mb?), like the zachtronics games

I had a blast. Thank you!

This is kind of a cool concept. It's like Space Golfing.

Another alternative is to make it like a turn-based Scorched Earth (Mother of all games), where you can either

1. launch asteroid size projectiles across star systems in a field of stars and black holes to it each other.

2. launch projectiles that then place black holes (perhaps either by timeout or signal--taking into account the speed of light!) to change the field.

It's a good start!

I refuse to hold my phone landscape even for videos so I'll never know how neat it is.

This is not an attempt to be a jerk. Just letting you know there's people like me out there.

This reminds me a lot of the first game I made more than 10 years ago (https://github.com/m-nez/gravity_slingshot). In my case you change the trajectory of your ship by adjusting the strength of stationary attractors in real-time.

I get that it's only a game, but all of these gravity games (with a couple of rare exceptions) ignore the fact that the black holes (or planets/suns) should be moving as well.

I love it. The dragging of black holes could be improved:

* The black hole is not moved until the cursor has moved more than five pixels.

* The first time the black hole moves in the dragging process, it moves more than one pixel, afterwards one. So it is a small jump and then it moves smooth.

* The cursor icon changes to the drag symbol only after the mouse has already moved five pixels, not as soon as the mouse button is hold down.

* When the mouse is outside the draggable zone, but still in the game window, the black hole is not dragged along the border.

Way, way more fun than expected. Played on desktop, though.

This one was cute also:

https://www.falstad.com/rendezvous/

(check the autopilot option)

This was delightful but I wanted it portrait as well and on iOS and w haptics! Take a spin:

https://testflight.apple.com/join/UdK72Y77

I just spent a ton of time on this. Reminds me of the joy from those old flash sites like addictinggames.com. Bravo.

Never ignored a tutorial faster.

(This is a compliment.)

Fantastic! Should add an (optional) instruction level, but would have loved this game as a kid.

I ended up making a very similar game for a hackathon with a friend years ago https://github.com/yogthos/graviton/

Very nice, being busy with sth, and I could not go through all levels and reached the one with star(sun?), but the topic of gravity assist manouver was always inspiring for me, so I enjoy this game, congrats on making it!

Wellll.... this is *(&#@ addictive. I need my Saturday night back now, man

It might be a cheat, but I'd really like a mode where the projected path of the ship had unlimited length. The trial and error cycle is a bit too long for some of the more advanced setups.

This is somehow surprisingly fun, a good game to play with kids.

Feedback:

- It would be nice to be able to manually key in the matter; on Safari desktop clicking uses up matter too quickly to set precisely.

- Key to speed up time once running.

Very cool. Had some trouble figuring it out on iPad.

There are a lot of browser games worth playing these days. It'd be nice if there were a site that could gather them all in one place.

Nicely done, and interesting to see how the computer "solved" some of them. It is even sneakier that I am.

I love these kind of things and all of their quirks. Just interacting with a webpage in a fun way. More of this!

reminds me of Gravitee, except in that game the planets are pre-positioned and you're hitting a golf ball

Very fun. Got far enough to need the black holes to provide the starting motion and gave up.

It’s nice but clearly designed for desktop

It’s a mobile world. This would be so nice as a proper touch enabled game

i've been making a bunch of fun physics games like this. i need to push out the latest one. try this one, torture a parking optimizer: https://truckslop.joshu.dev/

Doesn’t work on mobile safari. Tapping on a blackhole does nothing

frustrating game, feels half done. obviously least matter is consumed by bending it as close to the object, but game has crazy growth speed and no way to control it

thank you. just played all 20 levels. I want to see a dynamic mapping of the phase space as i drag a mass around. maybe i'll vibe code that.

Love it. And thanks for the refreshing skeumorphism

This is a lot of fun (only tried on desktop)

There goes this week's sprint.

Well, this is going to be a fun problem

wow wonderful game this is super fun! Would love it on iOS

Well, this was (*)@&#$@# addictive. I need my Saturday night back now, man

Nice, a lot of fun!

I love it! : )

Very neat.

Love it.

bravo - excellent game

event horizon ,relay,and last hole punch was crazy it took lots of time. completed all 20. appreciate it dude

Fun, but terrible on mobile.