diff --git a/config.yml b/config.yml
index c3ff9ba..6c64c0b 100644
--- a/config.yml
+++ b/config.yml
@@ -5,21 +5,21 @@ players:
  speed: 1
  user1:
   color: red
-  keys:
-   left: 4
-   right: 6
-   shoot: 5
- user2:
-  color: blue
   keys:
    left: q
    right: d
    shoot: s
+ user2:
+  color: blue
+  keys:
+   left: 4
+   right: 6
+   shoot: 5
 
 
 # Enemies config
 invaders:
- size: 4
+ size: 15
  speed: 2
  distance: 10 # distance in pixels between invaders
 
diff --git a/headers/errors.h b/headers/errors.h
new file mode 100644
index 0000000..1cd82c1
--- /dev/null
+++ b/headers/errors.h
@@ -0,0 +1,6 @@
+#ifndef SPACE_ERRORS_H
+#define SPACE_ERRORS_H
+
+
+
+#endif
diff --git a/src/configManagement.cpp b/src/configManagement.cpp
index bb56c34..1ff8118 100644
--- a/src/configManagement.cpp
+++ b/src/configManagement.cpp
@@ -6,10 +6,9 @@ public:
 	ConfigData collectedData;
 	void parseFile(const string& fname);
 	void readConfig();
-
+	void dumpInternalValues();
 private:
 	map<string, string> internalValues;
-
 	string& getString(const configKey& key);
 	char getChar(const configKey& key);
 	int getInt(const configKey& key);
@@ -17,6 +16,12 @@ private:
 
 };
 
+void ConfigBuilder::dumpInternalValues(){
+	for(const auto& ite : internalValues){
+		cerr << ite.first << " -> " << ite.second << endl;
+	}
+}
+
 void trimSpaces(string& str){
 	str.erase(0, str.find_first_not_of(' '));
 }
@@ -36,7 +41,6 @@ void ConfigBuilder::parseFile(const string& fname) {
 		unsigned currentIndent = 0;
 		while (line[currentIndent] == ' ')++currentIndent;
 
-
 		match = line.find(':');
 		if (match == string::npos)throw runtime_error("Invalid line : " + line);
 		string key = line.substr(0, match);
@@ -150,8 +154,13 @@ bool Game::reloadConfig() {
 		builder.readConfig();
 	}catch(runtime_error& e){
 		if(parsed)cerr << "An error occured while reading the configuration :" << endl;
-		else cerr << "An error occured while parsind the configuration :" << endl;
+		else cerr << "An error occured while parsing the configuration :" << endl;
 		cerr << e.what() << endl;
+		if(parsed){
+			cerr << "Parsed keys :" << endl;
+			builder.dumpInternalValues();
+		}
+		cerr << "(The old configuration was kept in memory)" << endl;
 		return false;
 	}
 	confData = builder.collectedData;
diff --git a/src/game_basics.cpp b/src/game_basics.cpp
index fbfb35b..2c21dd7 100644
--- a/src/game_basics.cpp
+++ b/src/game_basics.cpp
@@ -40,7 +40,12 @@ PlayMode Game::initialMenuHandler(){
 		case 0:{
 			return PlayMode::SINGLE;
 		}
-			// potential options...
+		case 1:{
+			return PlayMode::TWO_LOCAL;
+		}
+		case 2:{
+			return PlayMode::TWO_TCPIP;
+		}
 	}
 	return PlayMode::EXIT;
 }
@@ -64,7 +69,7 @@ bool Game::invadersTouchPlayer(){
 /**
  * Plays the game, and returns once the game is finished
  *
- * @return WinValue::PLAYERS if the players won, WinValue::INVADERS is the invaders won, WinValue::NOBODY else (also in case of error)
+ * @return @WinValue::PLAYERS if the players won, @WinValue::INVADERS is the invaders won, WinValue::NOBODY else (also in case of error)
  */
 WinValue Game::playGame(){ // returns when game is finished
 	// INIT
diff --git a/src/game_managers.cpp b/src/game_managers.cpp
index f3e1d54..1fc8781 100644
--- a/src/game_managers.cpp
+++ b/src/game_managers.cpp
@@ -42,7 +42,7 @@ bool Game::manageInvaders(){
 		if(end + confData.invadersSpeed < pm.getScreenWidth()){
 			basePos.setX(basePos.getX() + confData.invadersSpeed);
 		}else{
-			basePos.setY(basePos.getY() + confData.invadersSize);
+			basePos.setY(basePos.getY() + confData.invadersSize + confData.invadersDistance);
 			direction = !direction;
 			return true;
 		}
@@ -50,7 +50,7 @@ bool Game::manageInvaders(){
 		if(basePos.getX() >= confData.invadersSpeed){
 			basePos.setX(basePos.getX() - confData.invadersSpeed);
 		}else{
-			basePos.setY(basePos.getY() + confData.invadersSize);
+			basePos.setY(basePos.getY() + confData.invadersSize + confData.invadersDistance);
 			direction = !direction;
 			return true;
 		}
diff --git a/src/pixel_manager.cpp b/src/pixel_manager.cpp
index 4e3871e..0096af8 100644
--- a/src/pixel_manager.cpp
+++ b/src/pixel_manager.cpp
@@ -51,7 +51,7 @@ void PixelManager::dessinerSprite(const nsGraphics::Vec2D& baseVector, const std
 }
 
 unsigned PixelManager::showInitialMenu(){
-	return 0;
+	return 1;
 }
 
 unsigned PixelManager::showDeathMenu() {