Hi Fiwon, thank you for your feedback. Making a game challenging is pretty risky as it can lock some players out, but it does increase the fun for others!
PICO-8 and TIC-80 are both fantasy consoles, but they are different in a couple of ways. Notably, PICO-8 has a resolution of 128x128 while TIC-80 is larger at 240x136 (I cropped the screen for this jam). There are similarities too. Both use Lua and have 16 available colours. I'd encourage you to look at both to see which is right for you. There are also many other fantasy computers, have a look at this list!