Descripción Name an old-fashioned parlor game that could benefit from a high-tech makeover. Bingo! GameTech International designs and sells electronic handheld and fixed-base bingo systems that allow contestants to play up to 2,000 bingo cards at once. Its bingo systems are used by commercial, charity, and Native American bingo halls in about 40 states. The company also markets video lottery terminals and systems used by casinos, taverns, and truck stops in 15 states. GameTech generates revenue from the sale of software and equipment, as well as from maintenance and upgrade services.