INTERNATIONAL GAMES SYSTEM CO revenue for the last year amounted to 18.51 B TWD, the most of which — 11.51 B TWD — came from its highest performing source at the moment, Online Game, the year earlier bringing 6.95 B TWD. The greatest contribution to the revenue figure was made by Taiwan — last year it brought INTERNATIONAL GAMES SYSTEM CO 16.19 B TWD, and the year before that — 12.12 B TWD.