Very nice, I've been volunteering in a group, we've been teaching Scratch to kids from 7 to 12. Can't wait until I show them this

Is there any significant difference between TIC-80 and PICO-8? both looks awesome to me

TIC-80 is not only free but actually has more features than PICO-8. Supports more languages for example. The display resolution is also higher. The code memory limitations bigger.