I had 2 weeks of holiday vacation and I wasn't interested enough to work on my other long running projects so I decided to get into GBA homebrew when my brother gifted me a Game Boy Advance SP for Christmas. I was going to remake Wordle but someone else already did that so Bloxorz was my second choice.
Most of the hard work is done by the Butano engine: https://github.com/GValiente/butano I'm also using go to process the original assets and prerender the static part of the levels.
It runs on real hardware but you can (ironically) play it now in the browser thanks to EmulatorJS: https://nostabyte.itch.io/bloxorzgba
I might writeup a full tech breakdown of how it works at some point if anyone is interested.