Purpose Games is another game-creator. It basically has similar elements to Wizer, but is a little quicker and simpler. Account creation is free, and the site has a user agreement that stipulates NO offensive material may be posted, so you can assume it’s relatively safe.
No Google connection, but school email was “pre-screened” and signing up was easy.
There are several game options: matching, typing the answer, labeling an image, etc. There is a timer and students can log in to join the game rankings (because what kids don’t like competition??).