Pico8 carts are just a special flavor of png. I would try running it directly or if it won’t run them with the png extension just rename the file from .png -> .p8 without converting and see if that works
Relevant section of the user manual
There are three ways to share carts made in PICO-8:
1. Share the .p8 or .p8.png file directly with other PICO-8 users
Type FOLDER to open the current folder in your host operating system.
Although if you are having trouble you might have more luck getting started with the built in SPLORE command
Relevant section of the user manual
This might be easier to get started with since it will all get wired up automatically for you
Lucky for you the wikimedia foundation files annual reports https://wikimediafoundation.org/annualreports/2022-2023-annual-report/
I think this is the latest one available.
As to whether they need your money or not I’m a bit conflicted. They have raised and spent more and more money every year. They have a lot of money and some have argued they spend it poorly.
Ok the whole though, besides asking for donations, they have maintained their goal of being ad free. If you’ve ever used a fan wiki for a video game or hobby you have likely experienced how bad a wiki larded down with ads can be.
I think for myself as someone that has worked as a software engineer for my entire life building out massive infrastructure that is on a similar scale to Wikipedia, I don’t really know how they justify such high development spend when the tech isn’t really evolving very much. I’m sure it’s not cheap to host, so that spend is fine by me, but I’m not sure what all they are building. That doesn’t mean it’s not worthwhile, I just have a hard time imagining it.
I would encourage you to look at numbers and decide if they make sense to you. Also people have written on the subject, so some googling will likely bring you to more opinionated pieces than my own.