Many of the Wii U's greatest games have long since been ported over to Switch. It's just something that we have all come to accept with the console — yes, it had some great games, but most of them are now playable elsewhere (often in a better condition).
We expect to see these games playing today on the Switch, or maybe even on the 3DS a few years back, but we weren't anticipating that you would be able to play certain titles via a web browser. Well, that's exactly what one player, @JasperRLZ (primary coder of noclip), has managed to do.
Having got the game up and running, the player shared the results of their code tweaks in the following video on Twitter:
It's also worth bearing in mind that Tipping Stars was a cross-platform release with the 3DS, with each version of the game coming with a download code for other on purchase. This may well be another reason for the game being written in HTML so as to more easily allow it to function between the two consoles.
As outlined in the above tweet, the game's code did have some elements specific to the Wii U, but it is apparent that there was not too much so as to make the browser transfer impossible. Of course, the precise method of how to tweak the game as seen above has not been publicly shared (we wouldn't imagine that Nintendo would be best pleased to have it out there), but seeing that it's possible is pretty cool all the same.