Saw a post on Twitter of someone doing it with their spouse and I though lt about creating a web app to help me with colour generation and also grid generation.
The first version was the 1v1 mode and I tried it with a few friends. Later added the squad mode.
A few weeks ago, there was a viral tweet of a colorhunt and in the comments there were several people who said that they would love to participate but they cant because they travel alone, that gave me an idea to create the solo mode. Funny enough it's now the most popular mode in the game.
I do this for fun and also to help me develop my Product Manager skills(would one day love to shift from engineering to product however yet to get an opportunity at my current company). Main reason is just a way to keep InTouch with my friends and just explore colours with them.