diff --git a/client/src/lib/game-implementations.tsx b/client/src/lib/game-implementations.tsx
index 900b230af..a1dc9483d 100644
--- a/client/src/lib/game-implementations.tsx
+++ b/client/src/lib/game-implementations.tsx
@@ -62,6 +62,11 @@ export const GPT_CLIENT_IMPLEMENTATIONS: GPTClientImplementations = {
 						"linear-gradient(-45deg, #f0788a, #f48fb1, #9174c2, #79bcf2, #70a173, #f7ff99, #faca7d, #ff9d80, #f0788a)",
 					color: "var(--bs-dark)",
 				},
+				RAINBOW_EX: {
+					background:
+						"linear-gradient(-45deg, #0fa091, #0f98d5, #67087f, #d9007e, #f56e06)",
+					color: "var(--bs-light)",
+				},
 			},
 			dan: {
 				DAN_I: bgc("#3b66f1", "var(--bs-light)"),
@@ -369,6 +374,11 @@ export const GPT_CLIENT_IMPLEMENTATIONS: GPTClientImplementations = {
 						"linear-gradient(-45deg, #f0788a, #f48fb1, #9174c2, #79bcf2, #70a173, #f7ff99, #faca7d, #ff9d80, #f0788a)",
 					color: "var(--bs-dark)",
 				},
+				RAINBOW_EX: {
+					background:
+						"linear-gradient(-45deg, #0fa091, #0f98d5, #67087f, #d9007e, #f56e06)",
+					color: "var(--bs-light)",
+				},
 			},
 			matchingClass: {
 				B5: bgc("green", "var(--bs-light)"),
@@ -740,6 +750,16 @@ export const GPT_CLIENT_IMPLEMENTATIONS: GPTClientImplementations = {
 						"linear-gradient(-45deg, #f0788a, #f48fb1, #9174c2, #79bcf2, #70a173, #f7ff99, #faca7d, #ff9d80, #f0788a)",
 					color: "var(--bs-dark)",
 				},
+				RAINBOW_PLUS: {
+					background:
+						"linear-gradient(-45deg, #f0788a, #f48fb1, #9174c2, #79bcf2, #70a173, #f7ff99, #faca7d, #ff9d80, #f0788a)",
+					color: "var(--bs-dark)",
+				},
+				RAINBOW_EX: {
+					background:
+						"linear-gradient(-45deg, #0fa091, #0f98d5, #67087f, #d9007e, #f56e06)",
+					color: "var(--bs-light)",
+				},
 			},
 		},
 		enumColours: {
diff --git a/common/src/config/game-support/chunithm.ts b/common/src/config/game-support/chunithm.ts
index 7c71154c0..0b52bcd89 100644
--- a/common/src/config/game-support/chunithm.ts
+++ b/common/src/config/game-support/chunithm.ts
@@ -24,7 +24,8 @@ export const CHUNITHMColours = [
 	ClassValue("SILVER", "銀", "Silver: 13.25 - 14.49 Rating"),
 	ClassValue("GOLD", "金", "Gold: 14.50 - 15.24 Rating"),
 	ClassValue("PLATINUM", "鉑", "Platinum: 15.25 - 15.99 Rating"),
-	ClassValue("RAINBOW", "虹", "Rainbow: >=16 Rating"),
+	ClassValue("RAINBOW", "虹", "Rainbow: 16 - 16.99 Rating"),
+	ClassValue("RAINBOW_EX", "虹(極)", "Rainbow (Extreme): >=17 Rating"),
 ];
 
 export const CHUNITHMClasses = [
diff --git a/common/src/config/game-support/maimai-dx.ts b/common/src/config/game-support/maimai-dx.ts
index e7321c5af..ce7b16756 100644
--- a/common/src/config/game-support/maimai-dx.ts
+++ b/common/src/config/game-support/maimai-dx.ts
@@ -53,7 +53,8 @@ const MaimaiDXColours = [
 	ClassValue("SILVER", "Silver", "13000 - 13999 Rating"),
 	ClassValue("GOLD", "Gold", "14000 - 14499 Rating"),
 	ClassValue("PLATINUM", "Platinum", "14500 - 14999 Rating"),
-	ClassValue("RAINBOW", "Rainbow", ">=15000 Rating"),
+	ClassValue("RAINBOW", "Rainbow", "15000 - 15999 Rating"),
+	ClassValue("RAINBOW_EX", "Rainbow (EX)", ">=16000 Rating"),
 ];
 
 const MaimaiDXMatchingClasses = [
diff --git a/common/src/config/game-support/ongeki.ts b/common/src/config/game-support/ongeki.ts
index 0f945b20a..23abeda7d 100644
--- a/common/src/config/game-support/ongeki.ts
+++ b/common/src/config/game-support/ongeki.ts
@@ -14,16 +14,18 @@ export const ONGEKI_CONF = {
 } as const satisfies INTERNAL_GAME_CONFIG;
 
 export const OngekiColours = [
-	ClassValue("BLUE", "青", "Blue: 0 - 1.99 Rating"),
-	ClassValue("GREEN", "緑", "Green: 2 - 3.99 Rating"),
-	ClassValue("ORANGE", "橙", "Orange: 4 - 6.99 Rating"),
-	ClassValue("RED", "赤", "Red: 7 - 9.99 Rating"),
-	ClassValue("PURPLE", "紫", "Purple: 10 - 11.99 Rating"),
-	ClassValue("COPPER", "銅", "Copper: 12 - 12.99 Rating"),
-	ClassValue("SILVER", "銀", "Silver: 13 - 13.99 Rating"),
-	ClassValue("GOLD", "金", "Gold: 14.00 - 14.49 Rating"),
+	ClassValue("BLUE", "青", "Blue: 0.00 – 1.99 Rating"),
+	ClassValue("GREEN", "緑", "Green: 2.00 – 3.99 Rating"),
+	ClassValue("ORANGE", "橙", "Orange: 4.00 – 6.99 Rating"),
+	ClassValue("RED", "赤", "Red: 7.00 – 9.99 Rating"),
+	ClassValue("PURPLE", "紫", "Purple: 10.00 – 11.99 Rating"),
+	ClassValue("COPPER", "銅", "Copper: 12.00 – 12.99 Rating"),
+	ClassValue("SILVER", "銀", "Silver: 13.00 – 13.99 Rating"),
+	ClassValue("GOLD", "金", "Gold: 14.00 – 14.49 Rating"),
 	ClassValue("PLATINUM", "鉑", "Platinum: 14.50 - 14.99 Rating"),
-	ClassValue("RAINBOW", "虹", "Rainbow: >=15 Rating"),
+	ClassValue("RAINBOW", "虹", "Rainbow: 15.00 – 15.99 Rating"),
+	ClassValue("RAINBOW_PLUS", "虹+", "Rainbow +: 16.00 – 16.99 Rating"),
+	ClassValue("RAINBOW_EX", "虹(極)", "Rainbow (Extreme): >=17.00 Rating"),
 ];
 
 export const ONGEKI_SINGLE_CONF = {
diff --git a/common/src/constants/game.ts b/common/src/constants/game.ts
index a821f7a22..bab97e125 100644
--- a/common/src/constants/game.ts
+++ b/common/src/constants/game.ts
@@ -366,6 +366,7 @@ export enum CHUNITHM_COLOURS {
 	GOLD = 7,
 	PLATINUM = 8,
 	RAINBOW = 9,
+	RAINBOW_EX = 10,
 }
 
 export enum WACCA_STAGEUPS {
@@ -433,6 +434,7 @@ export enum MAIMAIDX_COLOURS {
 	GOLD = 8,
 	PLATINUM = 9,
 	RAINBOW = 10,
+	RAINBOW_EX = 11,
 }
 
 export enum MAIMAIDX_DANS {
@@ -595,4 +597,6 @@ export enum ONGEKI_COLOURS {
 	GOLD = 7,
 	PLATINUM = 8,
 	RAINBOW = 9,
+	RAINBOW_PLUS = 10,
+	RAINBOW_EX = 11,
 }
diff --git a/server/src/game-implementations/games/chunithm.test.ts b/server/src/game-implementations/games/chunithm.test.ts
index 13ce66006..0ffe0d5ce 100644
--- a/server/src/game-implementations/games/chunithm.test.ts
+++ b/server/src/game-implementations/games/chunithm.test.ts
@@ -90,6 +90,7 @@ t.test("CHUNITHM Implementation", (t) => {
 		f(14.5, "GOLD");
 		f(15.25, "PLATINUM");
 		f(16, "RAINBOW");
+		f(17, "RAINBOW_EX");
 
 		t.end();
 	});
diff --git a/server/src/game-implementations/games/chunithm.ts b/server/src/game-implementations/games/chunithm.ts
index d33baf9b7..164310b12 100644
--- a/server/src/game-implementations/games/chunithm.ts
+++ b/server/src/game-implementations/games/chunithm.ts
@@ -25,7 +25,9 @@ export const CHUNITHM_IMPL: GPTServerImplementation<"chunithm:Single"> = {
 				return null;
 			}
 
-			if (rating >= 16) {
+			if (rating >= 17) {
+				return "RAINBOW_EX";
+			} else if (rating >= 16) {
 				return "RAINBOW";
 			} else if (rating >= 15.25) {
 				return "PLATINUM";
diff --git a/server/src/game-implementations/games/maimaidx.test.ts b/server/src/game-implementations/games/maimaidx.test.ts
index b991518f8..4d5f93457 100644
--- a/server/src/game-implementations/games/maimaidx.test.ts
+++ b/server/src/game-implementations/games/maimaidx.test.ts
@@ -76,6 +76,7 @@ t.test("Maimai DX Implementation", (t) => {
 		f(null, null);
 		f(0, "WHITE");
 
+		f(16000, "RAINBOW_EX");
 		f(15000, "RAINBOW");
 		f(14500, "PLATINUM");
 		f(14000, "GOLD");
diff --git a/server/src/game-implementations/games/maimaidx.ts b/server/src/game-implementations/games/maimaidx.ts
index 3a6f5fb56..212ad8b69 100644
--- a/server/src/game-implementations/games/maimaidx.ts
+++ b/server/src/game-implementations/games/maimaidx.ts
@@ -27,7 +27,9 @@ export const MAIMAIDX_IMPL: GPTServerImplementation<"maimaidx:Single"> = {
 				return null;
 			}
 
-			if (rate >= 15000) {
+			if (rate >= 16000) {
+				return "RAINBOW_EX";
+			} else if (rate >= 15000) {
 				return "RAINBOW";
 			} else if (rate >= 14500) {
 				return "PLATINUM";
diff --git a/server/src/game-implementations/games/ongeki.test.ts b/server/src/game-implementations/games/ongeki.test.ts
index bd04233e9..2efbbd64f 100644
--- a/server/src/game-implementations/games/ongeki.test.ts
+++ b/server/src/game-implementations/games/ongeki.test.ts
@@ -92,6 +92,8 @@ t.test("ONGEKI Implementation", (t) => {
 		f(14, "GOLD");
 		f(14.5, "PLATINUM");
 		f(15, "RAINBOW");
+		f(16, "RAINBOW_PLUS");
+		f(17, "RAINBOW_EX");
 
 		t.end();
 	});
diff --git a/server/src/game-implementations/games/ongeki.ts b/server/src/game-implementations/games/ongeki.ts
index 3f14fe5d1..45772963b 100644
--- a/server/src/game-implementations/games/ongeki.ts
+++ b/server/src/game-implementations/games/ongeki.ts
@@ -66,7 +66,11 @@ export const ONGEKI_IMPL: GPTServerImplementation<"ongeki:Single"> = {
 				return null;
 			}
 
-			if (rating >= 15) {
+			if (rating >= 17) {
+				return "RAINBOW_EX";
+			} else if (rating >= 16) {
+				return "RAINBOW_PLUS";
+			} else if (rating >= 15) {
 				return "RAINBOW";
 			} else if (rating >= 14.5) {
 				return "PLATINUM";