An interactive fiction based on the recipe for OpenCola. The source code may be found at https://rezrov.xyz/caranmegil/OpenCola.
OpenCola was created with Inform and has IFID DE8C2D15-DCFF-4BB5-A491-62B5AC982464.
To play a work like this one, you need an interpreter program: many are available,
among them Gargoyle for MacOS, Linux or Windows;
Spatterlight for MacOS;
Windows Frotz or
Windows Glulxe for Windows.
The postcard was written by Andrew Plotkin and designed by Lea Albaugh.
Or you can play without downloading anything by following the 'Play In-Browser'
on your web browser.