Secret of the Solstice was a free-to-play MMORPG (Massively Multiplayer Online Role Playing Game) developed and published by DNC Entertainment in Korea and hosted by Outspark in the international English market.

On October 24, 2011, the Beta was released for 1 week until it closed and Outspark removed all traces of its existence.

Secret of the Solstice was re-launched in 2020 with the name "Xen Rebirth" as a non-profit fan-operated private server, running entirely on donations.

[3] In 2022, the Korean company 'Playworks' acquired all rights to the 'Xen Online' IP from DNC, which includes Secret of the Solstice.

A great King, mighty and fair, ruled the land of Xen with responsibility entrusted to him by the gods before they left the mortal plane.

With this trust came the Solstice Sphere, an ancient and mysterious artifact possessing great power.

In time the king married and the union yielded twin daughters, Adeline and Marian.

While admirers heaped endless praise on Adeline, seeds of bitterness and resentment began to grow in Marian.

A series of horrific events would soon take place and ultimately drench the land of Xen in the suffering it knows today.

Fighters train in the arts of the Akarinas sword, and are awarded their class after qualifying to join a vigilance committee.

They have strong melee attacks and high defensive capabilities but have weaker skills than the other classes.

They can deal massive damage with their spells, but are vulnerable in melee combat as they have low armor and hit points.

Neophytes can class change to Rogue at 66, Assassin at 96 and finally to Shadow Master at 131.

Finally, at level 112, they reach full potential and become a Ranger (if Neophyte) and Holy Avenger (if Acolyte).

Secret of the Solstice supports a Party System which allows up to eight characters to team up for adventures.

When a player dies in Secret of the Solstice, they are sent back to the last recorded town with a minor loss of experience.

OnRPG.com says: "Whilst originality and variety may not be the high point of this wonderful story, the constant events, the gorgeous community and the perfected music and presentation of this quaint interactive page turner are very much in place and will drag you back time and time again to finish your narration.

"[6] TenTonHammer.com says: "If I were to describe Secret of the Solstice to my best friend in the most brutal terms possible, I’d say it’s a charming title that should have been a dungeon crawler adventure game but that tried to get in on the MMOG bandwagon instead.

Some of the best features in SoS scream for the game to play offline in a single player experience.

Without a doubt, Outspark will find an audience that is bananas over this game, but I can’t help but feel confused by what it is trying to be.