The government has announced standards it hopes to set for casino resorts — to be built by the mid-2020s — requiring them to have hotels and conference rooms that would be among the biggest in the country.

The requirements, including hotels with more than 100,000 square meters for guest rooms, would necessitate huge investments from local governments and facility operators, and were revealed by the government Friday. Japan is attempting to compete with regional rivals including Macau, Singapore and South Korea with the planned casinos.

Using an average-sized Japanese guest room of 50 square meters, such a hotel would necessitate 2,000 rooms, far exceeding the number of rooms at many of the largest hotels in the country.