This collection of emulated handheld games, tabletop machines, and even board games stretch from the 1970s well into the 1990s. They are attempts to make portable, digital versions of the LCD, VFD and LED-based machines that sold, often cheaply, at toy stores and booths over the decades. [...]
This sort of Herculean effort to squeeze a major arcade machine into a handful of circuits and a beeping, booping shell of what it once was is an ongoing situation -- where once it was trying to make arcade machines work both on home consoles like the 2600 and Colecovision, so it was also the case of these plastic toy games. Work of this sort continues, as mobile games take charge and developers often work to bring huge immersive experiences to where a phone hits all the same notes.
Some Very Entertaining Plastic, Emulated at the Archive: