PICO-8 may be commercial software for creators, but players can play PICO-8 games published via the web app for free. The author, "zep" (of lexaloffle games),

PICO-8 may be commercial software for creators, but players can play PICO-8 games published via the web app for free. The author, "zep" (of lexaloffle games), is also a wonderful human being that goes out of their way to support people who buy it / play PICO-8 games and deserves every penny for it. While I hope they some day consider open sourcing PICO-8 so it may live on, for now, it provides them with meaningful income and lets them actively develop it, which I wholeheartedly support.