I still own both of the first two games, although I accidentally overwrote my "game beaten" save file for the first game with a hard mode run so I never started the sequel because I think there was a Golden Sun style password feature to carry something over to the sequel? I really should dig them out this summer and fire them back up.
I also remember trying them on the SP and the sensor didn't seem to work nearly as well with the relocation of the cartridge slot to the bottom of the device :(
There was something in the air last spring regarding this game with both Jeremy Parish doing a livestream of the game and Ars Technica running an article about it within weeks of each other which I thought was a hell of a coincidence.
Puerto Rico wasn't a gaming hotspot, unless a game required constant sunshine.
arstechnica.com
It looks really neat! I'm glad to see someone trying to continue forth with the concept and moderninzing it to use weather data instead of pure sunlight :)
There was also Molyneux's Black & White in 2001 which would check for weather data if you were connected to the Internet, but it was really finicky if I recall correctly.