Monika’s 10th topic in Act 3 mentions that she has a Twitter account. This account is located at @lilmonix3. Though it contains no novel information about the game, it was created in February 2016, well over a year before the game was revealed. Some tweets on her account correspond to events that happen within the game.
Its first tweet was written a year later on 14 February 2017, which was Valentine's Day. The tweet reads "today's my favorite day!!!!! ❤️❤️❤️❤️❤️"
On May 10th, 2017, she tweeted two lines from the song "Your Reality", which plays at the credits of the game.
Monika’s tweet about “going beta”, made on July 15th, 2017, lines up with the first beta build of DDLC.
On September 22nd, 2017 (the date of the game's release), she tweeted "the club is open!!!!!!!!!!!!!!!!!!!!!!!!!!!!!".
On 5 October 2017, the Twitter account’s bio was updated to include a short string of text apparently encoded in Base64:
However, it’s not directly Base64; it’s further obfuscated with a Vigenère cipher, the key being "Libitina." When these are reversed, the text yielded reads "Open Your Third Eye". This is the same text as the title of Natsuki's poem T3BlbiBZb3VyIFRoaXJkIEV5ZQ==.
On 28 September 2017, Dan Salvato posted a music track called doki17.mp3 to the unofficial DDLC Discord, with the messages “Here's an unfinished track that never made it into the game” and “It's pretty far from finished but it's still somewhat pleasant”.
On 29 September 2017, Salvato posted an image with the filename monika.jpg in the unofficial DDLC Discord, labeled only with the message “whoops”. This is also the uncorrupted version of the image in the ending credits.
On 30 September 2017, Salvato posted another image, this one with the filename yuri.jpg, in the unofficial DDLC Discord. The significance of the image is unknown, but many speculate that Yuri’s presence and the poster on the wall relate to her book, Portrait of Markov. Various messages, some disturbing, are written on the blackboard behind Yuri, but they are difficult to read and contain no new information. On 7 October 2017, Salvato revealed that monika.jpg and yuri.jpg were posters designed by JisuArt which had not been released.
- citation needed
- 0x0ade#1584, Discord message, October 6, 2017
- dansalvato#4807, Discord message, October 7, 2017