The original post: /r/datahoarder by /u/mil0wCS on 2025-04-15 18:55:18.

So I’ve been getting back into tetris again, I wanna be able to practice T spins and other techniques offline when my internet goes out. I know that some applications like four-tris exist but they can only do so much.

Some sites like

https://jstris.jezevec10.com/

https://himitsuconfidential.github.io/downstack-practice/tspin-practice.html

https://ddrkirby.com/games/4-wide-trainer/4-wide-trainer.html

all of them seem to work offline, but I’m worried if the page crashes or something I won’t be able to access it again until internet comes back on. Does anyone know any way I can use these tools offline?