Have the group get into pairs and lock elbows.
There is one person that is it and another to be chased (you can have two chasee’s if there is an odd number of people).
The chasee will then run from the person who is it. If tagged they then become it, but they can reach safety if the then lock elbows with a person.
The person on the other end then has to let go and becomes the chasee.