From what I saw from the website, this contains free-to-play & mobile games that came from Japan with translation versions for English & Chinese. Plus this website has plenty of Adult (18+) games if you click on the button that said "Adult Games" (with the link in on DOAXVV update leading you to...
This is Deviantart Relationships in a nutshell featuring Marie & Honoka, and Ayane & Marie:
Time to celebrate Marie's Birthday which a huge photo set from DOA5LR, DOAX3, DOAXVV, & Other games she appeared in along with girls she collab with:
DOAX3 & DOAXVV
Third Party Universes
Bonus Photos: Romantic Time with the Devil Girl