Sequence Break

A Sequence Break is a common term used to describe out of order scenarios within the "Metroidvania" style of Castlevania titles.
==Description==
When certain techniques (unintentional or otherwise) or Glitches are performed, a player may sometimes play the game out of its intended order, skipping the normal chain of gameplay in order to reach a location early or obtain items sooner than naturally intended. Sequence Breaking is commonly used within the speed running community in order to determine the best time saving path. Some sequence breaks do not heavily impact the game and may still allow the player to play as normal. Others may glitch break the game in an unplayable state; these sequence breaks are likely unintentional to the game as the game was never prepared to handle such a scenario. On rare occasions, sequence breaks may have been deliberately left in by game developers and can actually reward a player for attempting such.
==Game specific information==
The following lists only Sequence Breaks that can be performed by human standards (i.e., hacks are not listed)
===Castlevania: Symphony of the Night===
*A small room in the Outer Wall that requires the Form of Mist can be entered using a secret lift in the above room.
*Once the Soul of Wolf is obtained, Alucard can immediately head to the Clock Room. From there, if he jumps high above the left torch, transforms into Wolf mid-air, then immediately transforms back, he will gain the ability to Drop Kick. If he uses a drop kick on the left torch, he can gain enough height to reach the left ledge, allowing him to enter Olrox's Quarters (and subsequently the Colosseum) without the need of a Double Jump.
**The same method can also be used to explore Clock Tower (and reach Castle Keep to get Double Jump) early. Alucard must first run at full speed to cross the broken bridges and avoid landing near the cracks. Once in the tower, lure a Medusa Head to spawn at correct height and use Wolf-drop kick trick to climb the first ledge. The remaining area can be explored easily.
***Beware that, if visiting the leftmost exit of Alchemy Laboratory from the left side for the first time by any means, the game may soft lock in early versions, due to unable to handle the event with Maria Renard. Some late versions will simply disable the event if such case happens.
*The Echo of Bat can be skipped if Power of Mist is used to navigate the spike room.
*Using exploits and invincibility frames, it is possible to obtain the Silver Ring without the need of the Spike Breaker. 
*After Alucard kills Richter in battle, immediately after his final words dialogue concludes, Alucard should immediately use a Library Card. If successful, the game will not conclude. When Alucard returns to the Castle Keep's throne room, the start of the Reverse Castle cutscene will play (he will be out of position but will be fixed within a few moments). This trick allows Alucard to enter the Reverse Castle without the need of the Holy Glasses or the gold and Silver rings.
===Castlevania: Circle of the Moon===
*Passing through the Underground Waterway without the Cleansing.
===Castlevania: Harmony of Dissonance===
* Normally, the Lizard Tail must be collected from the Shrine of the Apostates side, while the left door is blocked by a wall. Once the player is inside the left area of the room of Lizard Tail, open the door to the left and leave, then quickly mash the "right dash" button during the animation. Sometimes this will trigger a right dash as soon as the player enters the Entrance area, that this dash will bypass the wall and put the player to the other side.
* After gaining Sylph Feather, the player can backtrack all the way to Entrance and go to the upper left corner. Equip Sacred Fist and Ice Book. While at the entrance of the room with a seemingly high platform, face right and cast an Icicle Knuckle, then perform a double jump after the recoil ends. This will clear the platform and reach the room inside. Doing so can immediately gain Platinum Tip, find a Candle with 400 gold, hint Card 3, and register a Warp Room which will not work until the first warp room that Death is guarding has been reached.Early Platinum Tip and Hint Card 3 on Youtube. Once the secret of two castles has been revealed, the Castle B equivalent room will contain the Lure Key which helps exploring.
*Using the aforementioned Sacred Fist & Ice Book combo can also obtain the Ring of Vlad without the need of a Double Jump. Early Ring of Vlad on Youtube.
* After beating the Golem in Luminous Cavern B, the large room afterwards will spawn Ghosts in an endless manner. If Juste takes the elevator route, the ghosts will stop spawning afterward. However, before using the elevator, it is possible to use jump kicks to bounce off the Ghosts to reach the small area and find the Walk Armor very early. If not done, this item can only be collected after having Griffin's Wing.
*In a similar fashion, a Drop Kick can be used to obtain the Eye of Vlad without the need of the Griffin's Wing.Early Eye of Vlad without Griffin's Wing on Youtube.
==See also==
*Glitches
==External links==