Hi there everybody,
I'd like to create a game and I found this lovely and powerful platoform.

1. Once the game is finished could I run it on my website or it will be published just here?
2. Is there any way to develop a game in portrait format? (1080x1920 pixels)

Anyone who can help I'd appreciate it! <3

Thanks and have a lovely day,
caliop.

To answer as best as I can:

1. Pico-8 can export to HTML just fine, as well as binaries for Windows, Mac, Linux, and Raspberry Pi. You can also upload carts here of course, and those can be embedded to your website if you'd prefer to do things that way.

2. It's strictly 128x128, more or less. It can upscale to higher resolutions, but the game itself can only render to 128x128. There are ways to work with 128x64, 64x128, and 64x64, but those are stretched to the 128x128 anyway. Nothing's stopping you from just not using all of that screen space, but there's no real support for any resolution other than 128x128, at least under normal means. Perhaps if you're competent with HTML you could find a way to stretch or crop it?

I'm willing to help answer any more questions, and others around here tend to be too. Always nice to see new people discovering Pico-8!