CrossPlay - Games, puzzles and tools for your e-reader

In plain words

CrossPlay is firmware for e-ink devices that adds games, puzzles, flashcards, and comics to the Xteink X4 Pro and Seeed reTerminal Sticky. Built for screens designed to display static content with minimal power consumption, it includes chess, logic puzzles, and other games that suit the e-ink format. Two devices can automatically discover and connect to each other without configuration, letting users play together. The software is designed for people who want interactive entertainment on affordable e-ink hardware.

written from the facts on this page · September 2026

From the sources

A fork of CrossPoint for the Xteink X4 Pro, Seeed reTerminal Sticky, and M5Stack PaperMono / Lite. Games, flashcards and comics built for a screen whose talent is holding still, and two devices that find each other with nothing to configure.

So is a chess position, a flashcard, a puzzle you are halfway through. The Xteink X4 Pro, Seeed reTerminal Sticky, and M5Stack PaperMono / Lite are e-ink devices, and CrossPoint already makes them good at reading. CrossPlay is firmware that adds everything else, and lets two of them find each other with nothing to configure. On each one: Games , then Chess , then Play nearby . They find each other from there. E-ink holds a page at no power for as long as you need it. So does a chess position, a flashcard, a logic grid, an article you saved to finish. The screen puts up a situation, you think, you decide. A panel that cannot animate is the right one for that, and so far it has been spent on…from crossplay.ma-r-s.com

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