This is cool and all but even water droplets won't convince me to start learning Java. Nice try Oracle ;)

kotlin saves the day!

“This is a medical device but I’m using it for something much more important, like PacMan, and Snake.”

Steve, you fucking legend.

Volta Labs (YC W19) uses this technology to prepare samples for DNA sequencing. https://news.ycombinator.com/item?id=40075571

How annoying is it to reset the game? Do you have to reload the water droplets every time?

It's a shame that once the glass is added, it looks significantly less cool. (But you need the glass to make unique shapes.)

I think he should try more stuff that aligns more closely with the original purpose of the device, I.e. programmable mixing and "routing" of fluids.

From all the examples with the glass pane, I found those the most interesting.

Maybe connect multiple of those devices together with hoses into some kind of "fluidics network", or build a hyper-exact cocktail mixing machine or something similar.