Want to get a real deal on the adventure of a lifetime? Upgrade your Six Flags Great America day pass to a Twicket while you’re at the park. This is a terrific idea for anyone planning to revisit Six Flags who wants to have some fun at a bargain! You can get your upgraded Six Flags Great America Twicket for less than $20, which allows you to use it at the park any time up to a pre-determined date, which will vary depending on your park’s location. This can offer a lot of convenience and savings, especially if you planned to visit on a certain date and had to cancel. But the time to grab your Twicket is running out, so don’t wait to see if it’s being offered in your area.