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Jörðgarð Map No. 476 is from the recently released Jörðgarð Trails adventure "A Tale of 2 Books." The PCs' journey through the vampire-ruled North Kingdom nears its end as the PCs explore the dungeon of the Darkhall, the castle of the former dark draug (undead) þingúl. The PCs have reached the end of the dungeon and now are searching þingúl's escape route. The second barrier is a dwarven-built gas trap chamber.
The dwarves who built this chamber trapped the room deviously. There is a seam around each of the floor tiles, suggesting that all of them are pressure plates. However, that is not the case. In the first two 5-foot/150-cm rows of tiles to the left and right of the map, each of the tiles is a pressure plate. As long as someone is standing on any one of the pressure plates in these 10-foot/3-meter zones, nothing will happen.
Farther inside the room, beyond the 10-foot/3-meter zones, one tile in each group of nine is a pressure plate. If no one is standing in either of the 10-foot/3-meter zones and a PC steps on a pressure plate in the middle part of the room, the trap will be triggered. It takes only one PC to trigger the entire trap. Each time a PC moves from one 5-foot/150-cm square within the battlemap grids to another, there is a 10% chance (1 on d10) that he or she steps on a trapped trigger plate.
If the trap is triggered, metal doors weighing 1,000 pounds/455 kg each fall at the two entrances, sealing them. Gas then will begin to pour out of the pipes on the side walls. The gas will cause these effects:
Round 1: The PCs will feel slightly dizzy but will suffer no penalties.
Round 2: The PCs have a penalty of -1 on all ability scores and rolls of the die.
Round 3: The PCs have a penalty of -3 on all ability scores and rolls of the die.
Round 4: The PCs have a penalty of -5 on all ability scores and rolls of the die.
Round 5: The PCs die. There are no saving opportunities to avoid death.
The graphic above is reduced in size. You can get the full-sized battlemap in two versions:
The editable Fractal Mapper (TM) 8 version (2.1 MB) from the Jörðgarð website.
As a JPG flat map of 1360 x 765 Pixels (360 KB) from the NBOS website at:
Both versions are released for personal and commercial use under the Open Game License Version 1.0a, which you can read on the Jörðgarð website at:
Next: Escape Route: Invisible Bridge