I have seen some great ancient Greek images in screen shots of Assassin’s Creed Odyssey. Some of which made an effort to be authentic, some didn’t.
Here are a few I have found to whet your appetite. If you have some that are better, please contact me and I will put them up here.
2022 Update: Ubisoft is upgrading their game in historical accuracy and educational value–except for violent content– by collaborating with several universities to prepare lesson plans and teacher’s guides. More here
A list of top ancient Greece games is HERE
April 2021 Update: I just discovered this intriguing history of Sparta