FischFright 3 is Roblox Fisch's 2026 Halloween event, and it brings a brand-new island called Caustic Hollow packed with spooky houses to knock on. There are 16 Trick or Treat houses spread across the island, each one numbered and hiding its own rewards, including Treats and event fish that count toward the FischFright 3 bestiary. The island is large enough that hunting them down without a map turns into a frustrating half-hour detour. This guide covers every house with exact coordinates and routing tips so you can hit all 16 in one clean run.
Caustic Hollow full island layout
How do you get to Caustic Hollow in FischFright 3?
Caustic Hollow is not accessible from the main world map. To reach it, head to Mosewood (the starting island) and turn right toward the beach edge. The Flying Dutchman ship is visible from the shoreline. Board it and speak to the captain, who will ferry you directly to Caustic Hollow.
Each house in Caustic Hollow carries a unique three-digit number displayed on or near the building. The list below uses those numbers alongside coordinates so you can cross-reference both.
All 16 Trick or Treat house locations in FischFright 3
Houses 1-6: The bridge and signpost area
The first cluster of houses sits near the main bridge and three-way signpost you encounter shortly after spawning. Take the path to the right from the central fountain.
| House # | In-Game Number | Coordinates | Landmark |
|---|---|---|---|
| 1 | 293 | -14809, 151, -9802 | Small hill behind the three-way signpost |
| 2 | 506 | -14754, 148, -9794 | First house to the right of House 1 |
| 3 | 167 | -14891, 146, -9754 | First house to the left of House 1 |
| 4 | 374 | -14861, 146, -9713 | Continue left from House 3 |
| 5 | 111 | -14821, 147, -9660 | Across the street from House 4 |
| 6 | 632 | -14809, 155, -9714 | Atop the hill overlooking the signpost |
House 6 sits noticeably higher than the others in this cluster. If you see the three-way signpost below you, you are in the right spot.
Houses 1-6 near the bridge
Houses 7-10: The main road and pumpkin cart row
Head back toward the town center and fountain. This row of four houses lines the main road.
| House # | In-Game Number | Coordinates | Landmark |
|---|---|---|---|
| 7 | 745 | -14702, 149, -9766 | Left side of the main road |
| 8 | 429 | -14725, 147, -9719 | Directly across from House 7 |
| 9 | 891 | -14630, 146, -9756 | Next to House 7; look for the pumpkin cart |
| 10 | 477 | -14532, 144, -9746 | Last house in the row, near the Flying Dutchman side |
House 9 has a good chance of rewarding an event fish. Grabbing those fish here saves time when working toward the FischFright 3 bestiary completion guide.
Houses 11-13: Merchant road and Scarecrow's Maze
Return to the fountain and take the left-side road this time, the one where the Merchant NPC is stationed.
| House # | In-Game Number | Coordinates | Landmark |
|---|---|---|---|
| 11 | 666 | -14627, 146, -9593 | Left of the road, just past the Merchant |
| 12 | 979 | -14699, 157, -9454 | Cross the bridge, then turn left |
| 13 | 813 | -14992, 182, -9571 | Past the bridge, climb up, right side of Scarecrow's Maze |
House 13 is the trickiest one in the bunch. After crossing the bridge near House 12, keep climbing until you reach the Scarecrow's Maze area. Do not go inside the maze. Circle around its right side and the house will be there. The elevation gain is significant, so the coordinate Y value of 182 is a useful sanity check that you are climbing in the right direction.
Houses 14-16: Pumpkin Patch
The final three houses are grouped in the Pumpkin Patch area. The fastest route is to go back to the spawn point and take the right-side path (same direction as Houses 1-6). At the three-way signpost, follow the sign pointing toward Pumpkin Patch.
| House # | In-Game Number | Coordinates | Landmark |
|---|---|---|---|
| 14 | 249 | -14716, 147, -9976 | Right next to the Pumpkin Pete NPC |
| 15 | 358 | -14717, 147, -10055 | To the left of Pumpkin Pete |
| 16 | 467 | -14823, 146, -10100 | Across from House 15, behind the pumpkin king statue |
Once you knock on House 16, you have completed the full Trick or Treat circuit. All 16 houses reward Treats that contribute to your event currency, and several also hand out event fish on top.
What rewards do you get from trick-or-treating?
Every house visit awards Treats, the primary event currency in FischFright 3. Some houses also drop event fish, which directly feed into bestiary progress. The Candy Bucket in your inventory tracks what you have collected, and visiting all 16 houses in a single session is the most efficient way to stack Treats without backtracking.
If you are still hunting down companions or want to check off other Fisch seasonal content, the Roblox Fisch companions guide covers every recruit with exact GPS coordinates. For more Fisch event coverage and seasonal strategy across the game, browse the full Roblox guides collection.
