Developers serving EU players may need regional versions or altered global builds if the proposal survives the amendment process.
Industry groups say the draft rules could also reduce free games and add compliance costs for developers, and are calling for a rethink.
Industry groups warn that vague rules on pay-to-win mechanics and fines of up to 6% of global turnover could hurt the region's games sector.
Game makers selling to EU players would face disclosure rules and fines of up to 6% of global turnover if the draft becomes law.