Traditional combo meals, in particular, have been on the decline for burger chains, according to Riggs. However, these new bundle meals, which have a lower price point and include a more diverse selection of food, have resonated with customers and are driving higher checks for chains.
Riggs also noted that consumers want to choose what is in their combo meal, perhaps influencing McDonald's to expand its McPick 2 menu or Wendy's to allow guests to pick between a burger or a chicken sandwich when they order the 4 for $4 meal.
Even non-burger chains are jumping into the Value War. For a limited time, Starbucks is offering customers an $8 Power Lunch, which allows consumers to pick one sandwich or salad, one snack (popcorn, chips or pretzels), either a banana or a fruit bar and a bottle of water. The deal runs through May 30.
"The economy is certainly challenging and uneven," Ted Marzilli, CEO of YouGov BrandIndex, told CNBC. "There are people who are doing quite well in the country at the moment, but there are a lot of people who are unemployed and certainly a lot of people who are underemployed. If you are trying to feed a family of three or four or five, these value promotions can really make a difference."
Correction: Hardee's is offering a Grilled Ham 'N' Cheese Thickburger. An earlier version misstated the name.