Em Holliday

This game requires a large grassy field. Designate boundaries. Choose two players to start The Blob. These players either link hands or arms. The two players linked try to tag other people. When players are tagged or go outside of the boundaries, they must link onto either end of The Blob by holding hands or linking arms. Only the players on the ends of The Blob are allowed to tag people because they are the only ones with a free hand. The Blob must stay linked to tag others. The game ends when only one player has still not become part of The Blob.

http://ce.byu.edu/yp/youthconf/games/