I bought RC2: Triple Thrill. I'm wondering how do I play the Wacky World's expansion? ... Or are they already loaded...?

All I see on the main menu on the top left corner of the screen is a + sign and the name of both expansions next to it. I'm lost... help please.

They all integrated into once nice package. Same as at retail. You've got it all, don't worry.

When you have both expansions installed, as is the case with the Triple Thrill Pack, the scenarios are sorted like so in every menu: Time Twister -> Wacky Worlds -> vanilla. Frontier Developments did this by adding one space before WW scenario names and two spaces before TT scenario names.

If the scenario's name holds the name of a period in time, it's from Time Twister, and if it holds the name of a continent, it's from Wacky Worlds.