I used these two activities together.
For the sentence unscramble I didn't give team points, I gave a piece of candy to whichever individual student gave the correct answer.
Speed quiz, have a student from each team come to the front, face his back to the screen and have his team use English to help him guess who is on the picture behind. I use a points scale from 1-5. 5 means they used some sentences and didn't break any rules. 1 means they used some Korean, motions etc.
Enjoy.