In case you aren't familiar with "Heads Up", here's a quick run-down:
Group members spin the wheel and try to get the "Guesser" to guess the word without saying the word or any part of the word. Guesser is positioned so that they cannot see the screen of the device and the group members tap/click where it says "Click Here on Correct Guess" to keep track of the number correct. Guesser can pass any time. I suggest small groups so all can be actively working to get the guesser to determine the word and so you can rotate through all group members. Words are removed once they come up so there should not be any duplicates during the same round. When you switch guessers, you can decide whether to reload the page or to continue where you left off.
I have, also, created a printable page of QR codes that link to the site above so that it is easy to distribute to your students. They can just scan using a QR code reader on their Chromebooks, iPad (may take little time to load), tablets or laptops!