The 150 in 1 Real Game is a multicart that serves as a demo for the OneBus. It is unknown whether this was actually released in cartridge form.
Overview
This multicart is the joint-largest Famicom multicart known to exist, being 16 megabytes in size. Despite this, several of the games are repeats or hacks of other games included. However, it is worth noting that this is because those games are duplicated in the ROM. Due to the method of graphics compression this multicart uses, it does not work on a real Famicom.