There are 6 different types of project available. You can choose projects from different types, more than one project from a single type, or even spend all of your money on one project. The key factor is that you are limited by the amount of money available (2,000 million plus any money you take from the subsidy budget).

Click on Show button next to the six types of projects to see all possible projects, then click the View Subsidy Budget button at the bottom of the screen.