JeopardyLabs allows you to create a customized Jeopardy-style quiz template without PowerPoint. The games you make can be played online from anywhere in the world. Building your own jeopardy template is a piece of cake. Just use a simple editor to get your game up and running.
If you’re not interested in building your own jeopardy templates you can browse other jeopardy templates created by other people, for example here’s one on the Solar System.