similar games (SiNiSistar)

What is the criterion for the games to get to the pg? this game was at https://www.playground.ru/games?release=released&sort=time&platform=pc
considering that this game seems to have not been completed before release.
well then let's go through the "similar" games:
Anthophobia, Night Of Revenge, LAB -Still Alive, LAB2-UndeR GrounD, Atelier Tia, Alps and the Dangerous forest, Ghost Hunter Vena, Wings of Roldea, The Holy Grail Of Alharahn, Future Fragments, Kurovadis, Alien Quest: Eve, Lala and the Bizarre Dungeon, Kung-Fu Girl