As a game I’d give Digimon Cyber Sleuth a 7.3/10 as a standalone outside of previous entries or other examples from the genre and without my own opinions on it.  

As for my opinion of it I’d rate it 3.8/10 based off of personal experience, knowledge and experience with previous entries in the series, and in comparison to its competitors.

If you’d like to know why, feel free to ask.