Great game!
I was able to get both Tetris GB and Tetris DX cartridge recently, to use with an Analogue Pocket. I need to get my lazy self into action and research how ‘save games/high scores’ work on the cartridges themselves (like on the original had, I assume). Right now, my top scores are lost after each power off… I am assuming it’s a battery that needs to be replaced.
Most projects written as a Demo, are still in production 3 years later. Still waiting for the “real” solution.
If you spend a lot of time thinking of future options, nobody will ever need them.
If you spend more time on the API with a partner, the partner will be replaced, probably before the solution is installed at all locations.