I’m only making business card sized games now

You may have also heard about Andrew Kensler’s “Business Card Ray Tracer” Though his work isn’t a game, maybe we can use it as a size guideline for the format: 40 characters wide by 35 characters tall, or 1400 bytes. So, without further ado, weighing in at 960 bytes, I present my first entry into the business card game format, “Tiny Ski”! If you made or know of any games with source code that can fit on a business card, please post them below.

Source: frankforce.com