Sega Pico, part of GameDB.
Pico.data.json: All data, structured in the JSON formatPico.data.tsv: All data, structured in the TSV formatPico.release_dates.pdf: Histogram of release dates, stratified by regionPico.titles.json: Mapping of serial numbers to game titles, structured in the JSON format
For now, I am just using the CRC32 hash of each game to uniquely identify it. In the future, more sophisticated approaches can be discovered.