https://psnprofiles.com/trophies/7284-vitaminx-destination
To complete the event you must choose 4-10 games which has their trophy list URLs where the last digit(which I highlighted in blue) goes from 0 to 9. My list of games is below, the picture will get updated as I complete games.
NEW UPDATE: Since I had some really bad experiences, I have decided to resort to a simple list showing which games I've completed.
0:
1:
2: Tetra's Escape (Vita)
3:
4:
5: Ratchet and Clank: Into the Nexus
6:
7: Candleman
8:
9:
