Archivist Jason Scott explains the painstaking process of emulating these little plastic chunks of joy, explaining the technology behind making sure the various VFD, LCD and LED games are thoroughly scanned and emulated at a high level of verisimilitude.
Scott explains that while most circuit boards containing these games can be read from non-destructively, it can sometimes be necessary (as with LCD game machines) to rip the entire thing apart to get all the information off of it. "To get the information off an LCD game, it has to be pulled apart and all its components scanned, vectorized, and traced to then make them into a software version of themselves," writes Scott. "Among the information grabbed is the LCD display itself, which has a pre-formed set of images that do not overlap and represent every possible permutation of any visual data in the game."
Lest anyone wonder about their own favorite titles from the bygone era of LCD handheld gaming, Scott tweeted that more are on the way, as soon as he makes sure there aren't any major bugs for individual games.