Grandma

 is the character you play in Grandma's Big Hug 4.

She's seen in the middle of your screen, walking with her Zimmer frame. As she walks, she'll encounter a lot of things — NPCs, obstacles and bonuses. By swiping left and right, you can make her encounter these things — or avoid them.

The goal is to have her hug the sad NPCs until they're again full of joy, and to pick up bonuses to extend the timer.

If she hits one of the obstacles, she'll get tired. Run into enough of them, and she'll fall asleep, ending the game.