Last year I joined a itch game jam called the Pleasure-Not-Business Card Game Jam, where participants created a RPG game or supplement that would fit on a business card.
For my entry I created a little sci-fi game called Planck. It’s essentially a Cepheus Engine\Quantum Engine system stripped down to its bare essentials. It’s designed to be a portable little RPG you can put in your wallet.
The reason I’m bringing it up again is that I’ve made a small update. I’ve designed a business card sized character sheet. It’s all free to download at the itch page.
I’ve added it to my ever-growing, somewhat unwieldy list of character sheets.