Neat idea! However one issue with everyone using a digital tracker is that you can't then easily see what other player resource stockpiles and production levels are. Perhaps at the very top of the screen you could have a compact summary view that people can leave their screen at when not making adjustments, allowing other players to see the stats at a glance.

Knocking the trackers off is a real issue, however, a great non-digital solution to that is the wooden laser-cut boards with physical notches for the cube slots - e.g. https://github.com/cophus/terraforming-mars-board and the many other options if you google or search etsy.

I would consider including some context on the homepage that this supports a board game and isn't a standalone game..

Great work too!

Beware: takes over the browser history rather than refreshing in-place

Nice, there's also a Vassal Terraforming Mars module. Vassal provides a client-server shared board game state for lots of boardgame modules you can also make yourself. It's java based. https://vassalengine.org/wiki/Module:Terraforming_Mars

Very nice! This could easily be adapted to the Ares Expedition expansion/other game thing:

Remove production of titanium and steel, remove energy entirely. Players start at 5 TL and 0 production everywhere. They can also produce cards, maybe add a pop-up like "draw x cards now!" Whenever production happens?

I thought this was like that one Twilight Struggle companion digital board that was pretty much the physical board but digital (which allows you to play with just the cards) since this covers just the resources mat. Still neato though.

It's not that mobile-friendly with the battery-draining background animation.

I can't figure out how to play. I'm on a screen where there are - + buttons for various properties with a "Production Phase" button.

Whatever I do, nothing happens when I tap that button.

Bottom of the page is hidden behind the production phase on Firefox on Android: https://ibb.co/6PYz5WB

You could add logs with timestamps. It is common that players forgot what actions they did, e.g. "Did I forgot to add a TR for this ocean?"

Very nice!

Might consider this for our next game.

Would you consider adding a +-10 button to the megacredits (and maybe heat)?

It would be a good timesaver for large purchases

If you press a plus button four times, then you have to press back four times to leave the site.

Mobile version seems to have odd scrolling behavior where I reach the bottom of the “page” too early.

Cool idea

Neat! Also, I'mma just gonna leave this here...

https://terraforming-mars.herokuapp.com/

(no, not something I've made)

Love this game! Anybody know of / have experience with any expansions?

Thanks for making this! Have you considered open sourcing this?

How much does it cost to be hot on HN?