Sega Master System (SMS), part of GameDB.
SMS.data.json: All data, structured in the JSON formatSMS.data.tsv: All data, structured in the TSV formatSMS.release_dates.pdf: Histogram of release dates, stratified by regionSMS.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.