diff --git a/js/dllpatcher.js b/js/dllpatcher.js
index a99ef0d..8f56525 100644
--- a/js/dllpatcher.js
+++ b/js/dllpatcher.js
@@ -3,8 +3,148 @@ mods = null;
 filename = null;
 errorLog = "";
 
+// Each unique kind of patch should have createUI, validatePatch, applyPatch,
+// updateUI
+
+StandardPatch = function(options) {
+    this.name = options.name;
+    this.shortname = options.shortname;
+    this.patches = options.patches;
+};
+
+StandardPatch.prototype.createUI = function(parent) {
+    var id = this.shortname;
+    var label = this.name;
+    parent.append('<div class="patch"><input type="checkbox" id="' + id + '"><label for="' + id + '">' + label + '</label></div>');
+};
+
+StandardPatch.prototype.updateUI = function(file) {
+    var id = this.shortname;
+    var elem = document.getElementById(id);
+    elem.checked = this.checkPatchBytes(file) == "on";
+};
+
+StandardPatch.prototype.validatePatch = function(file) {
+    var status = this.checkPatchBytes(file);
+    if(status == "on") {
+        console.log('"' + this.name + '"', "is enabled!");
+    } else if(status == "off") {
+        console.log('"' + this.name + '"', "is disabled!");
+    } else {
+        success = false;
+        return '"' + this.name + '" is neither on nor off! Have you got the right dll?';
+    }
+};
+
+StandardPatch.prototype.applyPatch = function(file) {
+    id = this.shortname;
+    var enabled = document.getElementById(id).checked;
+    this.replaceAll(file, enabled);
+    return enabled ? this.shortname : "";
+};
+
+StandardPatch.prototype.replaceAll = function(file, featureOn) {
+    for(var i = 0; i < this.patches.length; i++) {
+        replace(file, this.patches[i].offset,
+                featureOn? this.patches[i].on : this.patches[i].off);
+    }
+}
+
+StandardPatch.prototype.checkPatchBytes = function(file) {
+    var patchStatus = "";
+    for(var i = 0; i < this.patches.length; i++) {
+        var patch = this.patches[i];
+        if(bytesMatch(file, patch.offset, patch.off)) {
+            if(patchStatus == "") {
+                patchStatus = "off";
+            } else if(patchStatus != "off"){
+                return "on/off mismatch within patch";
+            }
+        } else if(bytesMatch(file, patch.offset, patch.on)) {
+            if(patchStatus == "") {
+                patchStatus = "on";
+            } else if(patchStatus != "on"){
+                return "on/off mismatch within patch";
+            }
+        } else {
+            return "patch neither on nor off";
+        }
+    }
+    return patchStatus;
+}
+
+// Each unique kind of patch should have createUI, validatePatch, applyPatch,
+// updateUI
+
+// The DEFAULT state is always the 1st element in the patches array
+UnionPatch = function(options) {
+    this.name = options.name;
+    this.shortname = options.shortname;
+    this.offset = options.offset;
+    this.patches = options.patches;
+};
+
+UnionPatch.prototype.createUI = function(parent) {
+    var container = $("<div>", {"class": "patch-union"});
+    container.append('<span class="patch-union-title">' + this.name + ':</span>');
+    for(var i = 0; i < this.patches.length; i++) {
+        var patch = this.patches[i];
+        var id = this.shortname + '-' + patch.shortname;
+        var label = patch.name;
+        container.append('<div class="patch"><input type="radio" id="' + id + '" name="' + this.shortname + '"><label for="' + id + '">' + label + '</label></div>');
+    }
+    parent.append(container);
+};
+
+UnionPatch.prototype.updateUI = function(file) {
+    for(var i = 0; i < this.patches.length; i++) {
+        if(bytesMatch(file, this.offset, this.patches[i].patch)) {
+            document.getElementById(this.shortname + '-' + this.patches[i].shortname).checked = true;
+            return;
+        }
+    }
+    // Default fallback
+    document.getElementById(this.shortname + '-' + this.patches[0].shortname).checked = true;
+};
+
+UnionPatch.prototype.validatePatch = function(file) {
+    for(var i = 0; i < this.patches.length; i++) {
+        if(bytesMatch(file, this.offset, this.patches[i].patch)) {
+            console.log(this.name, "has", this.patches[i].name, "enabled");
+            return;
+        }
+    }
+    return '"' + this.name + '" doesn\'t have a valid patch! Have you got the right dll?';
+};
+
+UnionPatch.prototype.applyPatch = function(file) {
+    var patch = this.getSelected();
+    var name = this.shortname + patch.shortname;
+    replace(file, this.offset, patch.patch);
+    return patch.shortname == "default" ? "" : name;
+};
+
+UnionPatch.prototype.getSelected = function() {
+    for(var i = 0; i < this.patches.length; i++) {
+        if(document.getElementById(this.shortname + '-' + this.patches[i].shortname).checked) {
+            return this.patches[i];
+        }
+    }
+    return null;
+}
+
 DllPatcher = function(fname, args) {
-    mods = args;
+    mods = [];
+    for(var i = 0; i < args.length; i++) {
+        mod = args[i];
+        if(mod.type) {
+            if(mod.type == "union") {
+                mods.push(new UnionPatch(mod));
+            }
+        } else { // standard patch
+            mods.push(new StandardPatch(mod));
+        }
+    }
     filename = fname;
     loadPatchUI();
 };
@@ -33,11 +173,9 @@ saveDll = function() {
     var fname = filename;
     
     for(var i = 0; i < mods.length; i++) {
-        id = mods[i].shortname;
-        var enabled = document.getElementById(id).checked;
-        replaceAll(dllFile, mods[i].patches, enabled);
-        if(enabled) {
-            fname += '-' + id;
+        var enabledStr = mods[i].applyPatch(dllFile);
+        if(enabledStr) {
+            fname += '-' + enabledStr;
         }
     }
     fname += '.dll';
@@ -49,67 +187,29 @@ saveDll = function() {
 loadPatchUI = function() {
     var patchDiv = $('#patches');
     for(var i = 0; i < mods.length; i++) {
-        var id = mods[i].shortname;
-        var name = mods[i].name;
-        patchDiv.append('<div class="patch"><input type="checkbox" id="' + id + '"><label for="' + id + '">' + name + '</label></div>');
+        mods[i].createUI(patchDiv);
     }
 }
 
 updatePatchUI = function() {
     for(var i = 0; i < mods.length; i++) {
-        var id = mods[i].shortname;
-        var elem = document.getElementById(id);
-        elem.checked = checkPatchBytes(mods[i].patches) == "on";
+        mods[i].updateUI(dllFile);
     }
 }
 
-buildError = function(patchName, message) {
-    var msg = '"' + patchName + '" ' + message;
-    console.log(msg);
-    errorLog += msg + '<br/>';
-}
-
 validatePatches = function() {
     errorLog = "";
     success = true;
     for(var i = 0; i < mods.length; i++) {
-        var patch = mods[i];
-        var status = checkPatchBytes(patch.patches);
-        if(status == "on") {
-            console.log('"' + patch.name + '"', "is enabled!");
-        } else if(status == "off") {
-            console.log('"' + patch.name + '"', "is disabled!");
-        } else {
+        var error = mods[i].validatePatch(dllFile);
+        if(error) {
+            errorLog += error + "<br/>";
             success = false;
-            buildError(patch.name, "is neither on nor off! Have you got the right dll?");
         }
     }
     return success;
 }
 
-checkPatchBytes = function(patches) {
-    var patchStatus = "";
-    for(var i = 0; i < patches.length; i++) {
-        patch = patches[i];
-        if(bytesMatch(dllFile, patch.offset, patch.off)) {
-            if(patchStatus == "") {
-                patchStatus = "off";
-            } else if(patchStatus != "off"){
-                return "on/off mismatch within patch";
-            }
-        } else if(bytesMatch(dllFile, patch.offset, patch.on)) {
-            if(patchStatus == "") {
-                patchStatus = "on";
-            } else if(patchStatus != "on"){
-                return "on/off mismatch within patch";
-            }
-        } else {
-            return "patch neither on nor off";
-        }
-    }
-    return patchStatus;
-}
-
 bytesMatch = function(buffer, offset, bytes) {
     for(var i = 0; i < bytes.length; i++) {
         if(buffer[offset+i] != bytes[i])
@@ -118,12 +218,6 @@ bytesMatch = function(buffer, offset, bytes) {
     return true;
 };
 
-replaceAll = function(buffer, patches, featureOn) {
-    for(var i = 0; i < patches.length; i++) {
-        replace(buffer, patches[i].offset, featureOn? patches[i].on : patches[i].off);
-    }
-}
-
 replace = function(buffer, offset, bytes) {
     for(var i = 0; i < bytes.length; i++) {
         buffer[offset+i] = bytes[i];
diff --git a/sdvx3-s2.html b/sdvx3-s2.html
index c21610b..9b5cee6 100644
--- a/sdvx3-s2.html
+++ b/sdvx3-s2.html
@@ -41,26 +41,48 @@
                                       on : [0xB8, 0x01, 0x00, 0x00, 0x00, 0x89, 0x83, 0x78, 0x0A, 0x00, 0x00, 0x90, 0x56, 0x57, 0x90, 0x90]}]
                     },
                     {
-                     name : "Score as overall percentage (Osu style % display)",
-                     shortname : "percent",
-                     patches : [{offset : 0x1FBD9,
-                                    off : [0x8B, 0x85, 0x50, 0x01, 0x00, 0x00, 0x8B, 0x9D, 0x48, 0x01, 0x00, 0x00, 0x8B, 0x8D, 0x54, 0x01,
-                                           0x00, 0x00, 0x8B, 0x95, 0x4C, 0x01, 0x00, 0x00, 0x56, 0x57, 0x3B, 0xC3, 0x75, 0x08, 0x3B, 0xCA,
-                                           0x0F, 0x84, 0x86, 0x00, 0x00, 0x00, 0x8B, 0xF8, 0x81, 0xC7, 0x7C, 0x9F, 0x02, 0x00, 0x8B, 0xF1,
-                                           0x83, 0xD6, 0x00, 0x3B, 0xD6, 0x7C, 0x1C, 0x7F, 0x04, 0x3B, 0xDF, 0x76, 0x16, 0x05, 0x26, 0x43,
-                                           0x00, 0x00, 0x83, 0xD1, 0x00, 0x89, 0x85, 0x50, 0x01, 0x00, 0x00, 0x89, 0x8D, 0x54, 0x01, 0x00,
-                                           0x00, 0xEB, 0x59, 0x8B, 0xF8, 0x81, 0xC7, 0x26, 0x43, 0x00, 0x00, 0x8B, 0xF1, 0x83, 0xD6, 0x00,
-                                           0x3B, 0xD6, 0x7C, 0x1C, 0x7F, 0x04, 0x3B, 0xDF, 0x76, 0x16, 0x05, 0x62, 0x16, 0x00, 0x00, 0x83,
-                                           0xD1, 0x00, 0x89, 0x85, 0x50],
-                                     on : [0x56, 0x57, 0x52, 0x51, 0xBE, 0x90, 0x71, 0x7C, 0x18, 0x8B, 0x46, 0x54, 0x99, 0x6A, 0x00, 0x6A,
-                                           0x02, 0x52, 0x50, 0xE8, 0x3F, 0xC4, 0x21, 0x00, 0x8B, 0xC8, 0x8B, 0xFA, 0x8B, 0x46, 0x58, 0x99,
-                                           0x01, 0xC1, 0x11, 0xD7, 0x6A, 0x00, 0x68, 0x80, 0x96, 0x98, 0x00, 0x57, 0x51, 0xE8, 0x25, 0xC4,
-                                           0x21, 0x00, 0x8B, 0xFA, 0x8B, 0xC8, 0x8B, 0x46, 0x54, 0x8B, 0x56, 0x58, 0x01, 0xD0, 0x8B, 0x56,
-                                           0x5C, 0x01, 0xD0, 0x01, 0xC0, 0x99, 0x83, 0xF8, 0x00, 0x0F, 0x85, 0x0F, 0x00, 0x00, 0x00, 0xBF,
-                                           0x00, 0x00, 0x00, 0x00, 0xBB, 0x00, 0x00, 0x00, 0x00, 0xE9, 0x0D, 0x00, 0x00, 0x00, 0x52, 0x50,
-                                           0x57, 0x51, 0xE8, 0x90, 0x36, 0x21, 0x00, 0x8B, 0xF8, 0x8B, 0xDA, 0x59, 0x5A, 0x8B, 0x45, 0x08,
-                                           0x8B, 0x40, 0x04, 0xEB, 0x49]}]
-                    },
+                        type : "union",
+                        name : "Score",
+                        shortname : "score",
+                        offset : 0x1FBD9,
+                        patches : [
+                            {
+                             name : "Default (NEAR+CRITICAL add to score from 0)",
+                             shortname : "default",
+                             patch : [0x8B, 0x85, 0x50, 0x01, 0x00, 0x00, 0x8B, 0x9D, 0x48, 0x01, 0x00, 0x00, 0x8B, 0x8D, 0x54, 0x01,
+                                      0x00, 0x00, 0x8B, 0x95, 0x4C, 0x01, 0x00, 0x00, 0x56, 0x57, 0x3B, 0xC3, 0x75, 0x08, 0x3B, 0xCA,
+                                      0x0F, 0x84, 0x86, 0x00, 0x00, 0x00, 0x8B, 0xF8, 0x81, 0xC7, 0x7C, 0x9F, 0x02, 0x00, 0x8B, 0xF1,
+                                      0x83, 0xD6, 0x00, 0x3B, 0xD6, 0x7C, 0x1C, 0x7F, 0x04, 0x3B, 0xDF, 0x76, 0x16, 0x05, 0x26, 0x43,
+                                      0x00, 0x00, 0x83, 0xD1, 0x00, 0x89, 0x85, 0x50, 0x01, 0x00, 0x00, 0x89, 0x8D, 0x54, 0x01, 0x00,
+                                      0x00, 0xEB, 0x59, 0x8B, 0xF8, 0x81, 0xC7, 0x26, 0x43, 0x00, 0x00, 0x8B, 0xF1, 0x83, 0xD6, 0x00,
+                                      0x3B, 0xD6, 0x7C, 0x1C, 0x7F, 0x04, 0x3B, 0xDF, 0x76, 0x16, 0x05, 0x62, 0x16, 0x00, 0x00, 0x83,
+                                      0xD1, 0x00, 0x89, 0x85, 0x50],
+                            },
+                            {
+                             name : "Subtractive (NEAR+ERROR subtract score from 10,000,000)",
+                             shortname : "subtract",
+                             patch : [0x56, 0x57, 0x52, 0x51, 0xBE, 0x90, 0x71, 0x7C, 0x18, 0x8B, 0x46, 0x5C, 0x6A, 0x00, 0x99, 0x6A,
+                                      0x02, 0x52, 0x50, 0xE8, 0x3F, 0xC4, 0x21, 0x00, 0x8B, 0xC8, 0x8B, 0x46, 0x58, 0x8B, 0xFA, 0x99,
+                                      0x6A, 0x00, 0x01, 0xC1, 0x11, 0xD7, 0x68, 0x80, 0x96, 0x98, 0x00, 0x57, 0x51, 0xE8, 0x25, 0xC4,
+                                      0x21, 0x00, 0x8B, 0xFA, 0x8B, 0x56, 0x18, 0x8B, 0xC8, 0x8B, 0x82, 0x80, 0x2C, 0x00, 0x00, 0x01,
+                                      0xC0, 0x99, 0x52, 0x50, 0x57, 0x51, 0xE8, 0xAC, 0x36, 0x21, 0x00, 0xB9, 0x80, 0x96, 0x98, 0x00,
+                                      0xBF, 0x00, 0x00, 0x00, 0x00, 0x29, 0xC1, 0x19, 0xD7, 0x8B, 0xDF, 0x8B, 0xF9, 0x59, 0x5A, 0x8B,
+                                      0x45, 0x08, 0x8B, 0x40, 0x04]
+                            },
+                            {
+                             name : "Average (Osu style % display)",
+                             shortname : "avg",
+                             patch : [0x56, 0x57, 0x52, 0x51, 0xBE, 0x90, 0x71, 0x7C, 0x18, 0x8B, 0x46, 0x54, 0x99, 0x6A, 0x00, 0x6A,
+                                      0x02, 0x52, 0x50, 0xE8, 0x3F, 0xC4, 0x21, 0x00, 0x8B, 0xC8, 0x8B, 0xFA, 0x8B, 0x46, 0x58, 0x99,
+                                      0x01, 0xC1, 0x11, 0xD7, 0x6A, 0x00, 0x68, 0x80, 0x96, 0x98, 0x00, 0x57, 0x51, 0xE8, 0x25, 0xC4,
+                                      0x21, 0x00, 0x8B, 0xFA, 0x8B, 0xC8, 0x8B, 0x46, 0x54, 0x8B, 0x56, 0x58, 0x01, 0xD0, 0x8B, 0x56,
+                                      0x5C, 0x01, 0xD0, 0x01, 0xC0, 0x99, 0x83, 0xF8, 0x00, 0x0F, 0x85, 0x0F, 0x00, 0x00, 0x00, 0xBF,
+                                      0x00, 0x00, 0x00, 0x00, 0xBB, 0x00, 0x00, 0x00, 0x00, 0xE9, 0x0D, 0x00, 0x00, 0x00, 0x52, 0x50,
+                                      0x57, 0x51, 0xE8, 0x90, 0x36, 0x21, 0x00, 0x8B, 0xF8, 0x8B, 0xDA, 0x59, 0x5A, 0x8B, 0x45, 0x08,
+                                      0x8B, 0x40, 0x04, 0xEB, 0x49]
+                            },
+                        ]
+                    }
                 ]);
             });
         </script>