diff --git a/dev-env/.engine/Ikemen_GO/Ikemen_GO_Linux b/dev-env/.engine/Ikemen_GO/Ikemen_GO_Linux
new file mode 100755
index 0000000..63df3ae
--- /dev/null
+++ b/dev-env/.engine/Ikemen_GO/Ikemen_GO_Linux
@@ -0,0 +1,3 @@
+#/bin/bash
+
+echo "Fake Ikemen"
diff --git a/dev-env/.engine/Ikemen_GO/Ikemen_GO_MacOS b/dev-env/.engine/Ikemen_GO/Ikemen_GO_MacOS
new file mode 100755
index 0000000..63df3ae
--- /dev/null
+++ b/dev-env/.engine/Ikemen_GO/Ikemen_GO_MacOS
@@ -0,0 +1,3 @@
+#/bin/bash
+
+echo "Fake Ikemen"
diff --git a/dev-env/.engine/run-ikemen.sh b/dev-env/.engine/run-ikemen.sh
new file mode 100755
index 0000000..9f5e840
--- /dev/null
+++ b/dev-env/.engine/run-ikemen.sh
@@ -0,0 +1,84 @@
+#/bin/bash
+
+currentDirectory=$(dirname "$(realpath "$0")")
+cd "$currentDirectory/Ikemen_GO"
+
+configPath="../../save/config.json"
+motifDirectory="../../../motifs"
+lifebarDirectory="../../lifebars"
+stageDirectory="../../../stages"
+characterDirectory="../../../chars"
+
+motif="motif/system.def"
+lifebar="01/fight.def"
+rounds=2
+characterOneColor=1
+characterTwoColor=1
+characterTwoAI=0
+
+for i in "$@"; do
+  case $i in
+    -motif=*)
+      motif="${i#*=}"
+      shift
+      ;;
+    -lifebar=*)
+      lifebar="${i#*=}"
+      shift
+      ;;
+    -p1=*)
+      characterOne="${i#*=}"
+      shift
+      ;;
+    -p1.color=*)
+      characterOneColor="${i#*=}"
+      shift
+      ;;
+    -p2=*)
+      characterTwo="${i#*=}"
+      shift
+      ;;
+    -p2.color=*)
+      characterTwoColor="${i#*=}"
+      shift
+      ;;
+    -p2.ai=*)
+      characterTwoAI="${i#*=}"
+      shift
+      ;;
+    -s=*)
+      stage="${i#*=}"
+      shift
+      ;;
+    -rounds=*)
+      rounds="${i#*=}"
+      shift
+      ;;
+    *)
+      ;;
+  esac
+done
+
+case "$OSTYPE" in
+  darwin*) #echo "It's a Mac!!" ;
+    ikemen="./Ikemen_GO_MacOS -AppleMagnifiedMode YES"
+  ;;
+  linux*)
+    ikemen="./Ikemen_GO_Linux"
+  ;;
+  *)
+    ikemen="./Ikemen_GO_Linux"
+  ;;
+esac
+
+$ikemen \
+  -config "$configPath" \
+  -r "$motifDirectory/$motif" \
+  -lifebar "$lifebarDirectory/$lifebar" \
+  -s "$stageDirectory/$stage" \
+  -rounds $rounds \
+  -p1 "$characterDirectory/$characterOne" \
+  -p1.color $characterOneColor \
+  -p2 "$characterDirectory/$characterTwo" \
+  -p2.color $characterTwoColor \
+  -p2.ai $characterTwoAI
diff --git a/dev-env/mugen.exe b/dev-env/lifebars/01/fight.def
similarity index 100%
rename from dev-env/mugen.exe
rename to dev-env/lifebars/01/fight.def
diff --git a/dev-env/motifs/system.def b/dev-env/motifs/system.def
new file mode 100644
index 0000000..e3ab04c
--- /dev/null
+++ b/dev-env/motifs/system.def
@@ -0,0 +1,76 @@
+[Info]
+name = Quick Versus
+author = neolao
+versiondate = 01,26,2024
+mugenversion = 1.1
+localcoord = 1280,720
+;localcoord = 1920,1080
+
+[Files]
+spr = system.sff          ;Filename of sprite data
+snd = system.snd          ;Filename of sound data
+select = select.def       ;Character and stage selection list
+fight = fight.def         ;Fight definition filename
+font1 = f-4x6.def         ;System fonts
+font2 = f-6x9.def         ;System fonts
+font3 = jg.fnt            ;System fonts
+font4 = Open_Sans.def
+font5 = default-3x5-bold.def
+font6 = default-3x5.def
+module =                  ;Ikemen feature: External Lua code
+
+[Music]
+
+[Title Info]
+
+[TitleBGdef]
+
+[TitleBG]
+type  = normal
+spriteno = 0,0
+
+[Select Info]
+
+[SelectBGdef]
+
+[SelectBG]
+type  = normal
+spriteno = 0,0
+
+[VS Screen]
+
+[VersusBGdef] 
+
+[VersusBG]
+type  = normal
+spriteno = 0,0
+
+[Demo Mode]
+[Continue Screen]
+
+[Game Over Screen]
+
+[Victory Screen]
+
+[VictoryBGdef] 
+
+[VictoryBG]
+type  = normal
+spriteno = 0,0
+
+[Win Screen]
+
+[Default Ending]
+
+[End Credits]
+
+[Survival Results Screen]
+
+[Option Info]
+
+[OptionBGdef]
+
+[OptionBG]
+type = normal
+spriteno = 0,0
+
diff --git a/dev-env/quick-versus.json b/dev-env/quick-versus.json
index 3a7593f..bf39ccf 100644
--- a/dev-env/quick-versus.json
+++ b/dev-env/quick-versus.json
@@ -1,7 +1,9 @@
 {
   "frame": true,
+  "motif": "system.def",
+  "lifebar": "01/fight.def",
+  "rounds": 2,
   "characterColumns": 3,
-  "ikemenExecutablePath": "mugen.exe",
   "sound": {
     "volume": 30,
     "background": "sound/title.mp3",
@@ -11,7 +13,7 @@
     "selectAILevel": "sound/confirm.wav",
     "moveCursor": "sound/move-cursor.wav",
     "cancel": "sound/cancel.wav"
-},
+  },
   "categories": [
     {
       "name": "Capcom",
@@ -242,7 +244,7 @@
       "y": "q",
       "l1": "d",
       "r1": "c",
-      "quit": "i"
+      "quit": "escape"
     },
     "gamepad": {
       "left": "A17",
diff --git a/index.js b/index.js
index caab3b7..456967c 100644
--- a/index.js
+++ b/index.js
@@ -1,4 +1,5 @@
-const { execFile } = require("node:child_process");
+const util = require("node:util");
+const exec = util.promisify(require("node:child_process").exec);
 const { app, BrowserWindow, ipcMain } = require("electron");
 const path = require("path");
 const fs = require("fs");
@@ -14,6 +15,7 @@ try {
 function getCurrentDirectory() {
   let currentDirectory;
   if (process.argv.length >= 3) {
+    // TODO use a named option
     currentDirectory = path.normalize(process.argv[2]);
   } else if (isDev) {
     currentDirectory = path.resolve(app.getAppPath(), "dev-env");
@@ -33,6 +35,20 @@ function getCurrentDirectory() {
   return currentDirectory;
 }
 
+function getConfiguration() {
+  const currentDirectory = getCurrentDirectory();
+  const jsonFilePath = path.resolve(currentDirectory, "quick-versus.json");
+  const yamlFilePath = path.resolve(currentDirectory, "quick-versus.yml");
+  let config;
+  if (fs.existsSync(jsonFilePath)) {
+    config = require(jsonFilePath);
+  } else if (fs.existsSync(yamlFilePath)) {
+    config = configYaml(yamlFilePath);
+  }
+
+  return config;
+}
+
 function createWindow() {
   let width = 1024;
   let height = 576;
@@ -40,15 +56,7 @@ function createWindow() {
   let frame = false;
 
   try {
-    const currentDirectory = getCurrentDirectory();
-    const jsonFilePath = path.resolve(currentDirectory, "quick-versus.json");
-    const yamlFilePath = path.resolve(currentDirectory, "quick-versus.yml");
-    let config;
-    if (fs.existsSync(jsonFilePath)) {
-      config = require(jsonFilePath);
-    } else if (fs.existsSync(yamlFilePath)) {
-      config = configYaml(yamlFilePath);
-    }
+    const config = getConfiguration();
 
     if (config) {
       if (config.hasOwnProperty("width")) {
@@ -99,10 +107,42 @@ function getVersion(event) {
   event.returnValue = version;
 }
 
-async function executeFile (event, filePath, args, options) {
-  execFile(filePath, args, options, () => {
-    event.returnValue = true;
-  });
+async function launchGame(event, options) {
+  const directoryPath = getCurrentDirectory();
+  const filePath = `${directoryPath}/.engine/run-ikemen.sh`;
+  const config = getConfiguration();
+
+  let command = `"${filePath}"`;
+  if (config.rounds) {
+    command += ` -rounds="${config.rounds}"`;
+  }
+  if (config.motif) {
+    command += ` -motif="${config.motif}"`;
+  }
+  if (config.lifebar) {
+    command += ` -lifebar="${config.lifebar}"`;
+  }
+  if (options.characterOne) {
+    command += ` -p1="${options.characterOne}"`;
+  }
+  if (options.characterOneColorIndex) {
+    command += ` -p1.color="${options.characterOneColorIndex}"`;
+  }
+  if (options.characterTwo) {
+    command += ` -p2="${options.characterTwo}"`;
+  }
+  if (options.characterTwoColorIndex) {
+    command += ` -p2.color="${options.characterTwoColorIndex}"`;
+  }
+  if (options.characterTwoAILevel) {
+    command += ` -p2.ai="${options.characterTwoAILevel}"`;
+  }
+  if (options.stage) {
+    command += ` -s="${options.stage}"`;
+  }
+  console.log(command);
+  await exec(command, { cwd: directoryPath });
+  return true;
 }
 
 function getConfigYaml(event, filePath) {
@@ -132,7 +172,7 @@ function getCurrentDirectoryExported(event) {
 async function start() {
   await app.whenReady();
   ipcMain.on("getVersion", getVersion);
-  ipcMain.on("execFile", executeFile);
+  ipcMain.handle("launchGame", launchGame);
   ipcMain.on("existsSync", existsSync);
   ipcMain.on("readFileSync", readFileSync);
   ipcMain.on("resolve", resolve);
diff --git a/preload.js b/preload.js
index 520fc13..eed91da 100644
--- a/preload.js
+++ b/preload.js
@@ -1,7 +1,7 @@
 const { contextBridge, ipcRenderer } = require("electron/renderer");
 
 contextBridge.exposeInMainWorld("mainAPI", {
-  execFile: async (filePath, args, options) => ipcRenderer.send("execFile", filePath, args, options),
+  launchGame: (args) => ipcRenderer.invoke("launchGame", args),
   existsSync: (filePath) => ipcRenderer.sendSync("existsSync", filePath),
   readFileSync: (filePath) => ipcRenderer.sendSync("readFileSync", filePath),
   resolve: (...args) => ipcRenderer.sendSync("resolve", args),
diff --git a/src/app.jsx b/src/app.jsx
index 35394eb..776d361 100644
--- a/src/app.jsx
+++ b/src/app.jsx
@@ -95,21 +95,8 @@ export default function App() {
     }
   }
 
-  const ikemenPath = mainAPI.resolve(currentDirectory, configuration.ikemenExecutablePath);
-  if (!mainAPI.existsSync(ikemenPath)) {
-    return (
-      <Requirement>
-        <p>
-          Ikemen executable file is missing:
-          {ikemenPath}
-        </p>
-      </Requirement>
-    );
-  }
-
   const environment = {
     currentDirectory,
-    ikemenPath,
     configurationFilePath
   };
 
diff --git a/src/fight/fight.presenter.jsx b/src/fight/fight.presenter.jsx
index ef42d7e..311b7c5 100644
--- a/src/fight/fight.presenter.jsx
+++ b/src/fight/fight.presenter.jsx
@@ -29,48 +29,34 @@ const BlackScreen = styled.div`
 export default function Fight() {
   const configuration = useConfiguration();
   const navigation = useNavigation();
-  const environment = useEnvironment();
   const dispatch = useNavigationDispatch();
   const backgroundSound = useBackgroundSound();
 
   if (navigation.state === TRAINING_FIGHTING || navigation.state === VERSUS_FIGHTING) {
-    const options = [
-      "-p1",
-      navigation.characterOne.definition,
-      "-p2",
-      navigation.characterTwo.definition,
-      "-s",
-      navigation.stage.definition,
-      "-rounds",
-      2
-    ];
-    if (configuration.motif) {
-      options.push("-r", configuration.motif);
-    }
+    const options = {
+      characterOne: navigation.characterOne.definition,
+      characterTwo: navigation.characterTwo.definition,
+      stage: navigation.stage.definition
+    };
+
     if (navigation.characterOneColorIndex) {
-      options.push("-p1.color", navigation.characterOneColorIndex);
+      options.characterOneColorIndex = navigation.characterOneColorIndex;
     }
     if (navigation.characterTwoColorIndex) {
-      options.push("-p2.color", navigation.characterTwoColorIndex);
+      options.characterTwoColorIndex = navigation.characterTwoColorIndex;
     }
     if (navigation.characterTwoAILevel > 0) {
-      options.push("-p2.ai", navigation.characterTwoAILevel);
+      options.characterTwoAILevel = navigation.characterTwoAILevel;
     }
 
     backgroundSound.pause();
     mainAPI.minimize();
-    mainAPI.execFile(
-      environment.ikemenPath,
-      options,
-      {
-        cwd: environment.currentDirectory
-      }
-    ).then(() => {
+    mainAPI.launchGame(options).then(() => {
       dispatch(endFight());
       backgroundSound.play();
       mainAPI.restore();
     });
-    console.log(environment.ikemenPath, options);
+    console.log("launchGame", options);
 
     return <BlackScreen>Fighting ...</BlackScreen>;
   }
diff --git a/src/input/useInput.hook.js b/src/input/useInput.hook.js
index ebddf8c..30ee151 100644
--- a/src/input/useInput.hook.js
+++ b/src/input/useInput.hook.js
@@ -67,6 +67,7 @@ export default function useInput(keyboardMapping, gamepadMapping) {
     keyboard.addEventListener(keyboardMapping.l1, onPressL1);
     keyboard.addEventListener(keyboardMapping.r1, onPressR1);
     keyboard.addEventListener(keyboardMapping.quit, onPressQuit);
+    /*
     gamepad.addEventListener(gamepadMapping.left, onPressLeft);
     gamepad.addEventListener(gamepadMapping.right, onPressRight);
     gamepad.addEventListener(gamepadMapping.up, onPressUp);
@@ -78,6 +79,7 @@ export default function useInput(keyboardMapping, gamepadMapping) {
     gamepad.addEventListener(gamepadMapping.l1, onPressL1);
     gamepad.addEventListener(gamepadMapping.r1, onPressR1);
     gamepad.addEventListener(gamepadMapping.quit, onPressQuit);
+    */
 
     return () => {
       keyboard.removeEventListener(keyboardMapping.left, onPressLeft);
@@ -91,6 +93,7 @@ export default function useInput(keyboardMapping, gamepadMapping) {
       keyboard.removeEventListener(keyboardMapping.l1, onPressL1);
       keyboard.removeEventListener(keyboardMapping.r1, onPressR1);
       keyboard.removeEventListener(keyboardMapping.quit, onPressQuit);
+      /*
       gamepad.removeEventListener(gamepadMapping.left, onPressLeft);
       gamepad.removeEventListener(gamepadMapping.right, onPressRight);
       gamepad.removeEventListener(gamepadMapping.up, onPressUp);
@@ -102,6 +105,7 @@ export default function useInput(keyboardMapping, gamepadMapping) {
       gamepad.removeEventListener(gamepadMapping.l1, onPressL1);
       gamepad.removeEventListener(gamepadMapping.r1, onPressR1);
       gamepad.removeEventListener(gamepadMapping.quit, onPressQuit);
+      */
     };
   }, [emitter, keyboardMapping, gamepadMapping, keyboard, gamepad]);