Intel takes the guesswork out of game compatibility by testing the most popular games throughout the Core ix series themselves. The most recent additions are the Core i7-8809G and Core i7-8705G with suggested graphical settings on current titles for what Intel deems would be an optimal gaming experience.
https://www.notebookcheck.net/Intel-Gameplay-now-shows-what-games-will-work-on-Kaby-Lake-G-PCs.293780.0.html