To play Jets of Time, you will need a valid US Chrono Trigger SNES ROM.
You can then roll a seed (build a randomized ROM with your flags of choice - if it's your first time we recommend either the beginner or standard race flags presets) several ways:
Once you have a ROM, you can run it in an emulator or with a tool like a flashcart. Don't forget that a tracker can help a lot. We also recommend familiarizing yourself with the list of Known Bugs and Useful Tips. The guides section is home to several targeted tutorials for new and veteran players alike.
If you have trouble, join the discord to get help! Don't be afraid to ask questions, we are happy to answer them.