For the moment, you can create custom fields for your trackers. When you add a lot of them, it can become painful to locate a particular custom field. Even if they are not numerous, you may want to categorize your fields, for example:

• "Computer requirements" section will contain: ** custom field "RAM (GB)": integer ** custom field "CPU": string ** custom field "Graphics": string
• "Program requirements" section will contain: ** custom field "Browser": List ** custom field "OS": List

You can setup sections in "Administration > Trackers", and drag and drop custom fields (or even fields!) in desired sections.