procedure TForm1.LoadImage();
var LGrp : TGorillaAssetsGroup;
    LAst : TGorillaTextureAsset;
    LBmp : TBitmap;
begin
  // load a file-based package
  FPackage := FPackage := FAssetsManager.LoadPackageFromFile('mypackage.zip');
 
  // get the model def from archive
  LGrp := FPackage.GetGroup(GORILLA_ASSETS_TEXTURE);
  LAst := LGrp.FindAssetByFilename('image1.png') as TGorillaTextureAsset;
  
  // this will request bitmap data from archive stream
  LBmp := LAst.Bitmap;
  try 
    // we then assign it to our image on the form
    Image1.Bitmap.Assign(LBmp);
  finally
    LBmp.free();
  end;
end;