Corrected some issues on game

Now it works! :)

games/koala_seasons/resources/shaders/glsl100/base.vs

@@ -6,7 +6,7 @@ attribute vec2 vertexTexCoord;
 attribute vec4 vertexColor;
 
 // Input uniform values
-uniform mat4 mvpMatrix;
+uniform mat4 mvp;
 
 // Output vertex attributes (to fragment shader)
 varying vec2 fragTexCoord;
@@ -21,5 +21,5 @@ void main()
     fragColor = vertexColor;
     
     // Calculate final vertex position
-    gl_Position = mvpMatrix*vec4(vertexPosition, 1.0);
+    gl_Position = mvp*vec4(vertexPosition, 1.0);
 }