Gameplay
You are initially presented with the numbered side of shuffled playing cards.
The flip side depicts a punctuation character.
There are five pairs of cards whose flip side matches.
Select two cards to flip at a time.
You need to remember what the other side of each card shows.
The goal is to eliminate each pair of matching cards by flipping them together.
Requirements
You can install a web browser that supports at least JavaScript 1.0 (1995) to run this application or you may consider implementing a GemiWeb0 browser with JavaScript0 yourself according to the following specification:
https://bkil.gitlab.io/gemiweb0