Seam clip
A seam clip is a precise type of clip that involves clipping through the seam where two adjacent surfaces meet at a convex angle, generally of 90 degrees or less. Clips through horizontal seams are called ledge clips, while clips through vertical seams are known as corner clips. Corner clips were previously known as crouch clips or LJCCs (short for "lol, just crouch clip"), as they were believed to only be possible while crouching, which has since been disputed.
Although both variants of seam clips are generally precise, ledge clips are often considered more difficult since it is harder to align Mario perfectly for the clip. Many ledge clips have no consistent setup. Corner clips tend to vary more in difficulty, with some being relatively easy and some being very precise.
Properties
Seam clips are made possible in locations where the gap between two adjacent surfaces is just wide enough to allow Mario to clip through. These gaps are significantly smaller than Mario, but due to the way the game handles collision, Mario will be able to clip through if he approaches the seam at just the right angle.
Ledge clips seem to be most frequent while Mario is in a dive animation, but have also been known to occur during other animations, such as long jumps or simply regular jumps. Corner clips are most frequently performed while Mario is walking, crouch walking, or rolling, but can also be done during other animations such as diving. Where corner clips are possible, it is generally also possible to clip Cappy through the corner by throwing him at the same angle that would cause Mario to clip through.
Seam clips are also known to be possible as certain captures.
Uses
Two speedrun tricks used in the Any% run, among other categories, that utilize corner clips are Lake Clip and Ice Corner Clip. The former has a consistent setup and is used by many high-level runners, while the latter must be performed in midair and is therefore much less consistent, making it rarely used in actual speedruns.
Another trick utilizing a corner clip that is used in the World Peace and Darker Side categories is Inverted Pyramid Skip. This clip has no consistent setup at all, since it must be performed high in the air and there is no ground that can be properly used for alignment.
Locations
The following is a list of some known seam clip locations:
| Kingdom | Location | Type | Video | Capture? |
|---|---|---|---|---|
| Cap Kingdom | The exit door at the top of Top-Hat Tower. Useful for Softlock%. | Corner | Link | |
| Cap Kingdom | The hat-shaped airship guarded by the Bonneter. | Corner | Link | |
| Cap Kingdom | The edge of an airship floating in the fog. | Ledge | Link | |
| Cap Kingdom | The exit of the Paragoomba bonus room. | Corner | Link | |
| Cap Kingdom | The exit of the Paragoomba bonus room. | Corner | Link | Paragoomba |
| Cascade Kingdom | The stump near the start of the kingdom. | Ledge | Link | |
| Cascade Kingdom | The top portion of the fallen rock bridge. | Ledge | Link | |
| Cascade Kingdom | The edge of the ground next to where the bridge lands. | Ledge | Link | |
| Cascade Kingdom | A raised piece of ground near where the bridge lands. | Ledge | Link | |
| Cascade Kingdom | The wall just behind the Odyssey upon first visiting the kingdom. | Ledge | ||
| Cascade Kingdom | A wall to the left of where the Odyssey is first found. | Ledge | Link | |
| Cascade Kingdom | A small rock formation above where the Odyssey is first found. | Ledge | Link | |
| Cascade Kingdom | The edge of the ground to the south of the T-Rex. | Ledge | Link | |
| Cascade Kingdom | The edge of the ground to the east of the T-Rex. | Ledge | Link | |
| Cascade Kingdom | An alcove containing purple coins below where the T-Rex resides. | Corner | Link | |
| Cascade Kingdom | The south edge of the Madame Broode arena. | Ledge | Link | |
| Cascade Kingdom | The edge of a 2D section in the Chasm Lifts level. | Corner | Link | |
| Sand Kingdom | The lower portion of a building on the east side of Tostarena Town. | Ledge | Link | |
| Sand Kingdom | The higher portion of a building on the east side of Tostarena Town. | Ledge | Link | |
| Sand Kingdom | The south edge of the tall pillar near Tostarena Ruins. | Ledge | Link | |
| Sand Kingdom | The north edge of the pillar with a moon on it near Tostarena Ruins. | Ledge | Link | |
| Sand Kingdom | The south edge of the second short pillar near Tostarena Ruins. | Ledge | Link | |
| Sand Kingdom | A diagonal seam on a ramp in the back of Tostarena Ruins. | Hybrid | Link | |
| Sand Kingdom | A thin ledge on the side of Jaxi Ruins. | Ledge | Link | |
| Sand Kingdom | The archway at the end of the Jaxi Driver level. | Ledge | Link | |
| Sand Kingdom | The ground near a bridge leading to the Moe-Eye Habitat. | Ledge | Link | |
| Sand Kingdom | One of the edges at the top of the Inverted Pyramid. | Ledge | Link | |
| Sand Kingdom | The left edge of the 2D section on the side of the Inverted Pyramid. | Ledge | Link | |
| Sand Kingdom | The right edge of the 2D section on the side of the Inverted Pyramid. | Ledge | Link | |
| Sand Kingdom | A square pillar on the left side of Deepest Underground. | Ledge | Link | |
| Sand Kingdom | A square pillar on the right side of Deepest Underground. | Ledge | Link | |
| Sand Kingdom | The east edge of the ground surrounding the oasis. | Ledge | File | |
| Lake Kingdom | The inside corner near End of the Hidden Passage. Known as Lake Clip. | Corner | Link | |
| Lake Kingdom | The outside corner near End of the Hidden Passage. | Corner | Link | |
| Lake Kingdom | The edge of the deep water well in the Water Plaza. | Ledge | Link | |
| Wooded Kingdom | The edge of an alcove in a tree near the Odyssey. | Corner | Link | |
| Wooded Kingdom | A tall ledge near the beginning of the Sky Garden Tower interior. | Ledge | Link | |
| Wooded Kingdom | One of the ledges near the lower area with the Sherms. | Ledge | Link | |
| Wooded Kingdom | Out of bounds on one of the blocks comprising the breakable rock wall. | Ledge | Link | |
| Wooded Kingdom | A short ledge near the top of the large ramp. | Ledge | Link | |
| Lost Kingdom | At the entrance to the room with the Cave Gardening moon. | Corner | Link | |
| Lost Kingdom | The curved corner of the ground outside Captain Toad's location. | Corner | Link | |
| Metro Kingdom | The edge of the entrance door within the Bullet Billding level. | Corner | Link | |
| Snow Kingdom | The Warp Painting platform (often occurs during Snow Dram attempts). | Ledge | Link | |
| Snow Kingdom | The outside entrance to the Rocket Flower level. | Corner | Link | |
| Snow Kingdom | The staircase at the end of the Ty-foo room. | Ledge | Link | |
| Snow Kingdom | The edge of the arena where Rango is fought. | Ledge | Link | |
| Snow Kingdom | The entrance door within the Icicle Cavern room. | Corner | Link | |
| Snow Kingdom | A long edge of the ground near the start of the Icicle Cavern room. | Ledge | Link | |
| Snow Kingdom | A smaller edge of the ground near the start of the Icicle Cavern room. | Ledge | Link | |
| Snow Kingdom | A corner of ice in the Icicle Cavern room. Known as Ice Corner Clip. | Corner | Link | |
| Snow Kingdom | A ledge in the back of the Icicle Cavern room. | Ledge | Link | |
| Luncheon Kingdom | A colored ledge near the slots building in Peronza Plaza. | Ledge | Link | |
| Luncheon Kingdom | A pillar at the south end of Peronza Plaza. | Ledge | Link | |
| Luncheon Kingdom | A pillar in Peronza Plaza behind the Crazy Cap shop. | Ledge | Link | Fire Bro |
| Luncheon Kingdom | A tall ledge near the Atop the Jutting Crag moon. | Ledge | Link | |
| Luncheon Kingdom | A ledge near the entrance to the Magma Crossing room. | Ledge | Link | |
| Luncheon Kingdom | The side of a thin bridge near the Meat Plateau. | Ledge | Link | |
| Luncheon Kingdom | The edge of the pot on top of the slots building. | Ledge | Link | Lava Bubble |
| Luncheon Kingdom | The platform at the start of the Cascading Magma room. | Ledge | Link | Lava Bubble |
| Luncheon Kingdom | The platform at the end of the Cascading Magma room. | Ledge | Link | Lava Bubble |
| Luncheon Kingdom | One of the edges of the Warp Painting island. | Ledge | Link | |
| Ruined Kingdom | The right side of the dragon's head. | Ledge | Link | |
| Moon Kingdom | A short wall near the entrance to the Wedding Hall. | Ledge | Link |