"Dear players! The New Year Mega Promotion for 'Dr. Chatelet: Faith ' on 3DM has arrived!
Event Duration: January 31st - February 15th
Dr. Chatelet: Faith'at 20% off."
https://www.3dmgame.hk/game/2465.html?continueFlag=31bd0131fb4468fb28878cd3ae5114cd
The promotional event for 'Dr. Chatelet: Faith' on the 3DM Store has commenced
Source: Steam Community (opens in a new tab)