RickD004 27517e3698 Adds Mississippi River map - vertical pipe map (#4176) ...

Resolves #4153 

## Description:

Add Mississippi river, inspired by Amazon, but vertical. Pipe-type map
along Amazon and Passage. 11 nations, with 51 additional nations for a
total of 62 for Humans vs Nations gamemode.


https://github.com/user-attachments/assets/6596a7bf-b529-442a-99b1-815493ee0e96


https://github.com/user-attachments/assets/5bb4959b-8ef3-428a-8e3a-94c424fa092b


https://github.com/user-attachments/assets/e4d4622e-ea42-4edf-9d86-d9d00c0fdde4

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory

## Please put your Discord username so you can be contacted if a bug or
regression is found:

tri.star1011

2026-06-06 19:26:34 -07:00

..

achiran

Cleanup nations (Part 3) 🧹 Remove nation strength (#2649)

2025-12-19 19:10:01 -08:00

aegean

Team Maps Expansion: New team spawnzones for multiple maps (#4058)

2026-05-28 15:34:26 -07:00

africa

Cleanup nations (Part 3) 🧹 Remove nation strength (#2649)

2025-12-19 19:10:01 -08:00

alps

Feature add alps clean (#3229)

2026-02-17 17:22:23 +00:00

amazonriver

Fix Amazon River Map 🏞️ (one row of pixels too much) (#2844)

2026-01-09 15:02:14 -08:00

antarctica

Add an Antarctica map 🐧 (#3740)

2026-04-22 16:04:56 -07:00

archipelagosea

add Archipelago Sea map ⚓ (#3749)

2026-04-24 08:07:48 -06:00

arctic

Add flags to NPCs of Arctic and Mediterranean maps (#3657)

2026-04-13 15:30:03 -07:00

asia

Cleanup nations (Part 3) 🧹 Remove nation strength (#2649)

2025-12-19 19:10:01 -08:00

australia

Cleanup nations (Part 3) 🧹 Remove nation strength (#2649)

2025-12-19 19:10:01 -08:00

baikal

teamGameSpawnAreas for Baikal ⚡ (#3467)

2026-03-18 19:26:03 -07:00

baikalnukewars

v30 nuke wars preparation: Disable boats & Team spawn zones (#3263)

2026-02-23 16:12:24 -06:00

bajacalifornia

Standarize map names across info and manifest jsons (#4011)

2026-05-26 19:13:29 -07:00

balkans

adds map of the Balkans (using Additional nations feature) (#3998)

2026-05-24 16:09:37 +01:00

beringsea

Team Maps Expansion: New team spawnzones for multiple maps (#4058)

2026-05-28 15:34:26 -07:00

beringstrait

Team Maps Expansion: New team spawnzones for multiple maps (#4058)

2026-05-28 15:34:26 -07:00

betweentwoseas

Huge map update: Re-make of the terrain of multiple maps for better gameplay (#4139)

2026-06-04 15:59:30 -07:00

blacksea

Huge map update: Re-make of the terrain of multiple maps for better gameplay (#4139)

2026-06-04 15:59:30 -07:00

bosphorusstraits

Team Maps Expansion: New team spawnzones for multiple maps (#4058)

2026-05-28 15:34:26 -07:00

britannia

Update Britannia and take its Classic version off rotation (#3710)

2026-04-18 21:36:49 -07:00

britanniaclassic

Restructured PR for Britannia Remastered Addition (#2813)

2026-01-07 19:29:35 -08:00

caribbean

Adds map of the Caribbean 🏴‍☠️ (#4067)

2026-05-29 19:23:21 -07:00

caucasus

adds map of the Caucasus (#3661)

2026-04-13 20:02:11 -07:00

choppingblock

Add map chopping block (#4143)

2026-06-04 15:58:34 -07:00

conakry

Team Maps Expansion: New team spawnzones for multiple maps (#4058)

2026-05-28 15:34:26 -07:00

danishstraits

Change name of map "The Straits" into "Danish Straits" (#3929)

2026-05-15 08:59:28 +00:00

deglaciatedantarctica

Cleanup nations (Part 3) 🧹 Remove nation strength (#2649)

2025-12-19 19:10:01 -08:00

didier

Second Didier Map for Fuze 🧸 (#2846)

2026-01-09 20:38:22 -08:00

didierfrance

Second Didier Map for Fuze 🧸 (#2846)

2026-01-09 20:38:22 -08:00

dyslexdria

Update dyslexdria map (#3886)

2026-05-08 14:47:47 -07:00

eastasia

Huge map update: Re-make of the terrain of multiple maps for better gameplay (#4139)

2026-06-04 15:59:30 -07:00

europe

Map accuracy & consistency pass: nation names, spawn positions, and flags across 9 maps (#3780)

2026-05-02 08:33:23 -06:00

europeclassic

Map accuracy & consistency pass: nation names, spawn positions, and flags across 9 maps (#3780)

2026-05-02 08:33:23 -06:00

falklandislands

Huge map update: Re-make of the terrain of multiple maps for better gameplay (#4139)

2026-06-04 15:59:30 -07:00

faroeislands

Cleanup nations (Part 3) 🧹 Remove nation strength (#2649)

2025-12-19 19:10:01 -08:00

fourislands

v30 nuke wars preparation: Disable boats & Team spawn zones (#3263)

2026-02-23 16:12:24 -06:00

gatewaytotheatlantic

Huge map update: Re-make of the terrain of multiple maps for better gameplay (#4139)

2026-06-04 15:59:30 -07:00

giantworldmap

Map accuracy & consistency pass: nation names, spawn positions, and flags across 9 maps (#3780)

2026-05-02 08:33:23 -06:00

greatlakes

Standarize map names across info and manifest jsons (#4011)

2026-05-26 19:13:29 -07:00

gulfofstlawrence

Team Maps Expansion: New team spawnzones for multiple maps (#4058)

2026-05-28 15:34:26 -07:00

halkidiki

Huge map update: Re-make of the terrain of multiple maps for better gameplay (#4139)

2026-06-04 15:59:30 -07:00

hawaii

Add Hawaii map (#3187)

2026-02-14 17:28:42 +00:00

iceland

Huge map update: Re-make of the terrain of multiple maps for better gameplay (#4139)

2026-06-04 15:59:30 -07:00

indiansubcontinent

Adds Indian Subcontinent map (#3975)

2026-05-23 17:38:03 +01:00

italia

Huge map update: Re-make of the terrain of multiple maps for better gameplay (#4139)

2026-06-04 15:59:30 -07:00

japan

Huge map update: Re-make of the terrain of multiple maps for better gameplay (#4139)

2026-06-04 15:59:30 -07:00

korea

Fix disconnected Yalu River, KP/CN border (#4056)

2026-05-28 15:31:31 -07:00

labyrinth

Add May Labyrinth (#4002)

2026-05-26 19:25:43 -07:00

lemnos

Fix: Lemnos map regenerated with map-generator to update with latest changes (#2884)

2026-01-13 09:50:50 +00:00

lisbon

Fix the Lisbon map (#2713)

2025-12-27 11:47:40 -08:00

losangeles

Update maps Los Angeles & Dyslexdria (#3809)

2026-05-01 13:04:48 +00:00

luna

Update map LUNA (#3854)

2026-05-06 08:19:15 +00:00

manicouagan

Cleanup nations (Part 3) 🧹 Remove nation strength (#2649)

2025-12-19 19:10:01 -08:00

marenostrum

Rename Mediterranean to Mare Nostrum 🏛️ (#3768)

2026-04-28 19:15:29 -06:00

mars

Cleanup nations (Part 3) 🧹 Remove nation strength (#2649)

2025-12-19 19:10:01 -08:00

mena

Cleanup nations (Part 3) 🧹 Remove nation strength (#2649)

2025-12-19 19:10:01 -08:00

middleeast

Adds map of the Middle East (#3829)

2026-05-05 22:12:42 -06:00

milkyway

Standarize map names across info and manifest jsons (#4011)

2026-05-26 19:13:29 -07:00

mississippiriver

Adds Mississippi River map - vertical pipe map (#4176)

2026-06-06 19:26:34 -07:00

montreal

fix: add validation for unknown flags in manifest.json (#3044)

2026-01-27 15:54:01 -08:00

newyorkcity

Cleanup nations (Part 3) 🧹 Remove nation strength (#2649)

2025-12-19 19:10:01 -08:00

niledelta

Fix seam lines in Nile Delta map (#3432)

2026-03-15 15:00:12 -07:00

northamerica

Map accuracy & consistency pass: nation names, spawn positions, and flags across 9 maps (#3780)

2026-05-02 08:33:23 -06:00

northwestpassage

Adds Northwest Passage map (using new additionalNations feature) (#3920)

2026-05-14 19:27:46 -07:00

oceania

Map accuracy & consistency pass: nation names, spawn positions, and flags across 9 maps (#3780)

2026-05-02 08:33:23 -06:00

onion

Adds onion map (#4057)

2026-05-29 15:58:02 -07:00

pangaea

Cleanup nations (Part 3) 🧹 Remove nation strength (#2649)

2025-12-19 19:10:01 -08:00

passage

Feat: Passage Map 🚢 (#3304)

2026-03-02 15:35:19 -08:00

pluto

Team Maps Expansion: New team spawnzones for multiple maps (#4058)

2026-05-28 15:34:26 -07:00

sanfrancisco

Add San Francisco map (#3373)

2026-03-07 20:51:59 -08:00

sierpinski

Feat: Sierpinski map - live play-tested (#2819)

2026-01-08 20:01:43 -08:00

southamerica

Standarize map names across info and manifest jsons (#4011)

2026-05-26 19:13:29 -07:00

southeastasia

Adds map of Southeast Asia (#4105)

2026-06-01 17:29:56 -07:00

straitofgibraltar

Huge map update: Re-make of the terrain of multiple maps for better gameplay (#4139)

2026-06-04 15:59:30 -07:00

straitofhormuz

Team Maps Expansion: New team spawnzones for multiple maps (#4058)

2026-05-28 15:34:26 -07:00

straitofmalacca

Fixes and QoL changes for the "Strait of Malacca" map (#3914)

2026-05-13 23:26:35 +00:00

surrounded

Team Maps Expansion: New team spawnzones for multiple maps (#4058)

2026-05-28 15:34:26 -07:00

svalmel

Cleanup nations (Part 3) 🧹 Remove nation strength (#2649)

2025-12-19 19:10:01 -08:00

taiwanstrait

Changes for Rebalancing the Taiwan Strait map (#3970)

2026-05-19 21:40:07 +00:00

thebox

Add new map “The Box” (#3054)

2026-01-29 19:49:10 -08:00

tourney1

Feat: Tournament Maps (#3483)

2026-03-21 20:54:49 +00:00

tourney2

Feat: Tournament Maps (#3483)

2026-03-21 20:54:49 +00:00

tourney3

Feat: Tournament Maps (#3483)

2026-03-21 20:54:49 +00:00

tourney4

Feat: Tournament Maps (#3483)

2026-03-21 20:54:49 +00:00

tradersdream

Team Maps Expansion: New team spawnzones for multiple maps (#4058)

2026-05-28 15:34:26 -07:00

twolakes

Huge map update: Re-make of the terrain of multiple maps for better gameplay (#4139)

2026-06-04 15:59:30 -07:00

venice

Adds map of Venice 🛶 (#3935)

2026-05-18 19:43:02 -07:00

world

Map accuracy & consistency pass: nation names, spawn positions, and flags across 9 maps (#3780)

2026-05-02 08:33:23 -06:00

yellowsea

Adds Map of the Yellow Sea (#4026)

2026-05-28 15:30:47 -07:00

yenisei

Readd Yenisei (#3145)

2026-02-07 12:55:58 -08:00