遊戲最新版本 [ | ] 目前最新版本為：Android（v 1.9.9）、iOS（v 1.9.9）。
特別DLC版本 [ | ] Cheritz於2017/03/21 v1.7.0推出了2017 April Fool's Day DLC，新增了遊戲內容。
Cheritz於2017/02/08 v1.6.7推出了2017 Valentine's Day的After Story，新增了全語音的Visual Novel，談論After Story後的情人節故事。
Cheritz於2016/12/19 v1.6.0推出了2016 Christmas特別版 ，新增了兩天的遊戲內容。
重大版本更新內容 [ | ]
v 1.9.9 (2018/09/20) [ | ] 為2018/09/20-26的活動，是韓國的Thanksgiving。版本為Android與iOS的v1.9.9。進版畫面為六人（Casual+Deep五人加MC）穿著韓服的樣子。
Game-access Event
a. 免費的MAX SPEED （僅在活動期間有效）
b. 新的進版畫面及app icon
Chuseok-themed Intro Chat Rooms.
10% off SALE of "Next-Day Purchase" 编辑
v 1.9.7 (2018/09/06) [ | ] 因應V的生日而更新的版本。
Game-access reward event
Intro chat rooms of RFA members
v 1.9.4 (2018/07/26) [ | ] 夏日活動，也是MM兩週年活動，包含了：
此次更新共有20沙漏，其中10個是因為上版本的問題補償
7/30-8/8夏日活動
登入活動
每天登入會送不等的沙漏
六天全登入會在相簿加入新的Summer vacation illustration
十天全登入會得到100沙漏和730愛心
MAX SPEED免費使用
登入時會有3個隨機intro chat rooms，十天共有30個
系統穩定 因此加上1.9.5版本，共可獲得30沙漏（1.9.4 20個，1.9.5 10個）。
v 1.8.3 (2017/09/09) [ | ] 由於在v 1.8.2版的更新造成AOS許多玩家data消失，因此給予全ASO玩家共150沙漏；iOS玩家則有10沙漏的補償。
Urgent bug fix：Data loss bug fixed
Hourglass compensation：Total 150.(iOS : 10 hourgalsses)
Expected Update time：September 9th 19:50(KST)
v 1.8.2 (2017/09/08) [ | ] 此版本新增了Another Story的V路線，需要花費300個沙漏才能解鎖。原有的VIP或全角色電話卡「不能」打給V與Unknown，需要花費10沙漏才能打通。
Mystic Messenger Another Story V Route Released
11天的遊戲內容
7個endings
Visual Novel及電話全語音
新的鈴聲
V Route的Freetalk
Fixed the profile load system
Minor bug fixes
v 1.8.1 (2017/08/25) [ | ]
v 1.8.0 (2017/08/04) [ | ]
v 1.7.9 (2017/07/26) [ | ]
v 1.7.8 (2017/07/19) [ | ] New UI applied
Various bug fixes 此版本更新了遊戲的UI，並透露將會於2017/07年釋出新的路線。
v. 1.7.7 (2017/07/07) [ | ] Fixed duplicated notification bug
v 1.7.6 (2017/07/03) [ | ] Improved the in-game downloads
Improved the chatroom alarm scheduler
Various bug fixes
v 1.7.5 (2017/05/22) [ | ] Improved UI for user’s convenience
Auto-scroll to current day and chatroom in list
Added pause function in visual novel
Improved timezone and asset download system
Minor bug fixes
v 1.7.4 (2017/04/27) [ | ] Increased game stability
Improved push notification scheduling
Improved the “Today” notice UI in the DayList
Other various bug fixes
v 1.7.3 (2017/04/13) [ | ] Added Common Route Skip feature 此版本新增了Casual Story及Deep Story的Common Route Skip選項。意即，現在可以花100個沙漏，直接點選你希望進入的遊戲角色故事。當然也可以選擇從第一天開始玩，即免費。
Improved the in-game update system
Stabilized the email system
Various game improvements and trivial bug fixes
v 1.7.2 (2017/04/05) [ | ] iOS save data loading bug fixed
Minor bug fixes 此版本更新了愚人節特輯的「April Theme」，至4/30 23:59結束。
v 1.7.1 (2017/03/29) [ | ] Fixed a save load bug
Various bug fixes
v 1.7.0 (2017/03/21) [ | ] 此版本新增了April Fool's Day的新進版畫面以及遊戲內容。
April Fools DLC addition.
Improved the in game resource update system.
English version image fixes.
English typos fixed.
Trivial bug fixes.
v 1.6.9 (2017/03/02) [ | ] 此版本將進版畫面更新為原版。並因幾天前的伺服器不穩問題，贈送玩家共35個沙漏。
Back button UI update
Mode Select Load option updated to Save/Load
Added a save menu when branching
Continue button design update
Branch button design update
Fixed a typo in the emails for English
Improved the text message UI
Fixed a bug with the Christmas DLC VN rooms
Added a cancel button to the UFO reward interface
Asset update optimization
Text message preview bug fix
Fixed a login bug
v 1.6.8 (2017/02/16) [ | ] Improved the chatroom notifications.
Updates to the in app purchase system.
Improved Valentines Day DLC.
Minor bug fixes.
Added a missing English translation.
v 1.6.7 [ | ] 此版本新增了Valentine's Day的進版畫面（含進版問候），以及2017 Valentine's Day的After Story。
Valentines Day update
Improved the Save/Load system
Improved the Email system
Fixed a notification setting bug
Added a missing translation
v 1.6.6 [ | ] After ending bug fix.
Added some missing translations.
Fixed the BGM suddenly muting bug.
Fixed a display bug with the Christmas DLC chatroom progress.
Christmas DLC bug fix.
v 1.6.3 [ | ] 此版本新增了2017年新年進版畫面（含進版問候）。
Fixed a chatroom display bug in Extra
Fixed a bug where images and audio sporadically failed to load.
Improved the in-game announcement system.
2nd day of the Christmas Story branch bug fixed.
Continue button overlap bug fixed.
[ | ] V 1.6.0 [ | ] 此版本新增了2016年聖誕節進版畫面（含進版問候）。
Christmas DLC Added
Check out the Special menu at the app!
Eve+Christmas Day Included
8 Endings
Full-voiced
Christmas BGMs included
Customer Service System changed
Email Crash Optimization
v 1.5.2 [ | ] 此版本新增了萬聖節進版畫面（含進版問候）。
Halloween title image and greeting voice added.
Fixed text message push alarm issues.
Improved game stability.
Ended the free period of Max Speed & Save Slot Load.
Free trial for the Max Speed/Save Slot Load Feature will end from v.1.5.2
VIPs can still use Max speed for free.
If you are not a VIP user; you can still receive the Max Speed feature for free by unlocking all character’s After Endings and Secret endings 1 & 2 by November 7th.
v 1.3.8 [ | ] 此版本新增了秋天進版畫面。
Made the guest reward saving more stable.
Added a quality select for the video.
Changed some error messages to be more friendly.
Updated contact us information/link.
Fixed email responses.
Fixed some save load issues.
Updated the title image for Autumn.
[ | ] 以上圖片皆來自Cheritz 。
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