A number of custom blocks have been inserted into the baserom with GPS, they are as follows. You can see how they are laid out in Map16 on this page.
When adding your own blocks it is recommended to start with Page 4 addresses to avoid baserom conflicts.
| Address | Description |
|---|---|
| 290 | Only passable by Mario. To sprites, it will obey the act-as setting. |
| 291 | Only passable by sprites. To Mario, it will obey the act-as setting. |
| 292 | Bounces sprites! But is passable by Mario. |
| 293 | Down-facing one-way; solid to anything moving upwards. |
| 294 | Left-facing one-way; solid to anything moving rightwards. |
| 295 | Right-facing one-way; solid to anything moving leftwards. |
| 296 | Passthrough when switch state is ON and the Map16 act-as when OFF. |
| 297 | Passthrough when switch state is OFF and the Map16 act-as when ON. |
| 298 | Shatters when a sprite is thrown at it. |
| 299 | Kills sprites. Does not work for sprites that do not have object interaction. |
| 29A | Block that kills the player (even on yoshi), is solid for sprites and kills on wall running. |
| 29B | Block that kills the player (even on yoshi), is passable for sprites and kills on wall running. |
| 29C | Makes Mario small, clears item box and removes balloon, flight, and slide states. |
| 29D | A Donut Lift, which will fall shortly after being stepped on. |
| 29E | A throw block with an endless supply. |
| 29F | A ledge vine that the player automatically hops above. |
| 2A0 | A block that acts like a mid-air suspended Spiny. |
| 2A1 | A block that acts like a stationary Swooper. |
| 2A2 | Sets the switch state to ON when anything (incl. dead sprites) touches it. |
| 2A3 | Sets the switch state to OFF when anything (incl. dead sprites) touches it. |
| 2A4 | Will teleport Mario to the screen exit configured in Lunar Magic that this block is placed on. |
| 2A5 | A single-use bounce block. |
| 2A6 | Bounces throw blocks from the side. |
| 2A7 | A coin that changes the switch state to ON when collected. |
| 2A8 | A coin that changes the switch state to OFF when collected. |
| 2AA-2AF | Camera Blocks (hover in Lunar Magic for descriptions). |
| 2B0-2BF | Custom Question Blocks (hover in Lunar Magic for descriptions). |
| 300-36F | Screen Scrolling Pipe Tiles (hover in Lunar Magic for descriptions). |