The Highway is an extended adventure area in which you can experiment with unique boost combinations as you journey into the unexplored areas of the Undead World.
Collect Highway Idle Rewards at the Bank; these will include valuable items for leveling up heroes by combat type at the S.M.A.R.T. Lab.
The Highway is playable during an active season; each season lasts for eight weeks. During the season, you can start a Highway journey up to seven times per week for free. Use Diamonds for additional journeys within the same week.
Select a road, and defeat enemies to progress in the journey. At each distance milestone you reach, you will gain rewards; you can start your next challenge at the farthest distance milestone achieved within the current season.
Visit the Auto Shop to customize your vehicle and select the Auto Parts to activate. The vehicle accompanies you into battle and provides valuable assistance.
In the Restaurant, you will find a variety of buffs. Tap their icons to see their stats, and use Buffet Chips to purchase and activate them.
Visit the Statue for more buffs. Each quadrant of the night sky contains a constellation; tap the buff icons to learn what they can do for you. Assign Potsherds to them to activate the ones you want and make them stronger.
Your heroes bring their ranks with them into the Highway, but other factors are pre-selected within this game mode.