Lovely Letters

 is a mobile event introduced as a Valentine's-themed variation of Space Dash.

Info
While this event is active, you will play levels with starting boosters as long as you complete levels without failing.

Much like Space Dash, it has a meter which fills up as the player wins levels in a row. The booster prizes get progressively greater as the meter fills, the prizes being the same as those in Space Dash. These boosters will be added to your letter, but they do not consume your normal booster stock, so you will not waste boosters if you fail a level. The booster candies will always be provided when you start a level. However, in area-restricted levels such as Level 55, none of these boosters take effect, barring the +3 moves booster, which is available only from the third letter and above. If you meet the level failure screen, your letter will empty.

Appearance

 * This event usually starts on Mondays at GMT 8:00 am and it usually ends on Fridays at GMT 8:00 am. This event is alternatively available with Build-a-Bot.
 * Starting from 2018, it occurs every February.

Appearances by year
* Not counting weekends.
 * 2018: 5 February - 2 March 2018
 * 2019: 28 January - ongoing

Trivia

 * This event was released on 5 February 2018.