diff --git a/src/lib/parser/costumes/parseCostumes.js b/src/lib/parser/costumes/parseCostumes.js
index d1aacc2..e755dd0 100644
--- a/src/lib/parser/costumes/parseCostumes.js
+++ b/src/lib/parser/costumes/parseCostumes.js
@@ -6,7 +6,6 @@ const parseCostumes = (arrayBuffer, i = 0, offset = 0) => {
     id: i,
     offset,
     size: arrayBuffer.byteLength,
-    decompressedSize: 0,
   };
 
   const costumes = [];
@@ -25,8 +24,6 @@ const parseCostumes = (arrayBuffer, i = 0, offset = 0) => {
     costumes.push(costume);
   }
 
-  metadata.decompressedSize = costumes.length;
-
   const map = {
     type: 'costumes',
     from: offset,
diff --git a/src/lib/parser/costumes/parseSprdata.js b/src/lib/parser/costumes/parseSprdata.js
index 704c26a..156e624 100644
--- a/src/lib/parser/costumes/parseSprdata.js
+++ b/src/lib/parser/costumes/parseSprdata.js
@@ -15,18 +15,17 @@ const parseSprdata = (arrayBuffer, i = 0, offset = 0) => {
     const tile = parser.getUint8();
     const sprdata2 = parser.getInt8();
 
-    const mask = sprdata0 & 0x80 ? 0x01 : 0x80;
-    let y = (sprdata0 << 1) >> 1;
-
-    const sprpal = (sprdata2 & 0x03) << 2;
-    let x = sprdata2 >> 2;
+    const x = sprdata2 >> 2;
+    const y = sprdata0 & 0x7f;
+    const flip = sprdata0 & 0x80 ? true : false;
+    const paletteId = (sprdata2 & 0x03) << 2;
 
     sprdata.push({
       x,
       y,
       tile,
-      mask,
-      sprpal,
+      flip,
+      paletteId,
     });
   }
 
diff --git a/src/lib/parser/parseRom.js b/src/lib/parser/parseRom.js
index 8432735..10cda01 100644
--- a/src/lib/parser/parseRom.js
+++ b/src/lib/parser/parseRom.js
@@ -21,8 +21,8 @@ const parseRom = (arrayBuffer, res) => {
   const costumes = [];
   const sprpals = [];
   const sprdesc = [];
-  const sprlens = [];
   const sproffs = [];
+  const sprlens = [];
   const sprdata = [];
   const preps = [];
   const titles = [];
@@ -63,22 +63,22 @@ const parseRom = (arrayBuffer, res) => {
     scripts.push(item);
   }
 
-  for (let i = 0; i < res.costumes.length; i++) {
-    const [offset, length] = res.costumes[i];
+  for (let i = 0; i < res.costumegfx.length; i++) {
+    const [offset, length] = res.costumegfx[i];
 
     const buffer = arrayBuffer.slice(offset, offset + length);
-    const item = parseCostumes(buffer, i, offset);
+    const item = parseCostumeGfx(buffer, i, offset);
     item.buffer = buffer;
-    costumes.push(item);
+    costumegfx.push(item);
   }
 
-  for (let i = 0; i < res.costumegfx.length; i++) {
-    const [offset, length] = res.costumegfx[i];
+  for (let i = 0; i < res.costumes.length; i++) {
+    const [offset, length] = res.costumes[i];
 
     const buffer = arrayBuffer.slice(offset, offset + length);
-    const item = parseCostumeGfx(buffer, i, offset);
+    const item = parseCostumes(buffer, i, offset);
     item.buffer = buffer;
-    costumegfx.push(item);
+    costumes.push(item);
   }
 
   for (let i = 0; i < res.sprpals.length; i++) {
@@ -99,22 +99,22 @@ const parseRom = (arrayBuffer, res) => {
     sprdesc.push(item);
   }
 
-  for (let i = 0; i < res.sprlens.length; i++) {
-    const [offset, length] = res.sprlens[i];
+  for (let i = 0; i < res.sproffs.length; i++) {
+    const [offset, length] = res.sproffs[i];
 
     const buffer = arrayBuffer.slice(offset, offset + length);
-    const item = parseSprlens(buffer, i, offset);
+    const item = parseSproffs(buffer, i, offset);
     item.buffer = buffer;
-    sprlens.push(item);
+    sproffs.push(item);
   }
 
-  for (let i = 0; i < res.sproffs.length; i++) {
-    const [offset, length] = res.sproffs[i];
+  for (let i = 0; i < res.sprlens.length; i++) {
+    const [offset, length] = res.sprlens[i];
 
     const buffer = arrayBuffer.slice(offset, offset + length);
-    const item = parseSproffs(buffer, i, offset);
+    const item = parseSprlens(buffer, i, offset);
     item.buffer = buffer;
-    sproffs.push(item);
+    sprlens.push(item);
   }
 
   // @todo Assert that the highest value of sprdesc is within sprlens and sproffs.
@@ -160,8 +160,8 @@ const parseRom = (arrayBuffer, res) => {
     costumes,
     sprpals,
     sprdesc,
-    sprlens,
     sproffs,
+    sprlens,
     sprdata,
     preps,
     titles,