Each game can have four human players, plus the Mexican Train. I don't allow more than that because all the trains won't fit on a screen.

Yes, you can go out on a double. This is one of the most common and most contested variations. 🙂 As I've seen conflicting versions of the rules, I had to pick one.

No, double zeros are scored as zero.

MexicanTrain.Online is meant to accompany existing chat and video programs. I recommend Zoom, Skype or Facebook video. Start a call in one of those apps, then come over to mexicantrain.online and start a game.

• https://en.wikipedia.org/wiki/Mexican_Train#Variations
• https://www.mastersofgames.com/rules/mexican-train-dominoes-rules.htm
• https://www.mexicantrainfun.com/mexican-train-rules/

I thought it would be more fun if each game had a unique name to refer to. Since I'm trying to put a little joy in the world, why not a positive adjective combined with a cuddly animal?

Reordering tiles only works on larger screens. For example, you can reorder your tiles on an iPad horizontally, but not vertically. And definitely not on phones. Sorry, this is a limitation of the tech.