The Wormhole Opens is the 9th Cyclone Stage. Upon completion, players have a 30% chance to unlock Volley Cat. This is a No Continues stage.
Battleground
Super Cosmic Cyclone, a Starred Alien Cyclone spawns at the beginning of the level. About ten seconds later, the first peons begin to spawn, Shibalien Elite and Mistress Celeboodles. This pattern repeats as the battle progresses: Mistress Celeboodles every 4 seconds, Shibalien Elites every 20 seconds, Star Pengs every 26-36 seconds, and General GreGories every 13 seconds.
Strategy
It's important to notice that this stage is not a challenge if attempted with all treasures from all CotC chapters, as it was implemented before the last 2 chapters. In case this stage is attempted earlier, just spamming Catellites will not be enough.
Just like any other Cyclone, this one is best dealt with by units who can slow it down or freeze it consistently, such as Psychocat. The only thing to keep an eye on is range, as units like Seafarer cannot hope to reach the Cyclone.
Warp Blocker cats will fare very well here as they will not be interrupted. However, if they are attacked they will quickly die as they will not be Warped to a safer distance. One good example is Rover Cat, only if it is hypermaxed.
Strategy 1
All you need is Catellite and Freshman Cat Jobs. At the start of the battle, send 1 Catellite to stall SCC a bit. Lure the enemies to your base and then slaughter them. After that, let SCC hit your base, then spawn Freshman and reduce its damage to nothing. Follow by using the regular Cat Cannon to push the boss just far away enough to no longer hit the base. Let your debuffers and damage dealers destroy SCC before the Gregory arrive.
Walkthrough
| Video | Player | Notes |
|---|---|---|
 The Battle Cats - The Wormhole Opens (deadly) The 2nd Dimension No Uber |
Discreate |
Trivia
- This was the first Cyclone Stage to be rated Deadly (not including the Deadly Carnival events).
- The background in The Wormhole Opens is the same one that appears in Black Hole.
- This stage used to count a limited Deadly stage like Realm of Carnage, since it lasts for 3 days and is a No Continues stage. In version 6.8, however, PONOS changed its schedule to every Sunday so it now shares the same schedule with Attack on Titanium.
