Initially, these episodes from Liberty City were supposed to be DLC for the GTA IV, but at the end Rockstar decided to separate it from the main game and sell it as a separate game. This expansion includes two stories: TLaD and TBoGT.
Let's start with TLaD: the add-on turned out to be meager as they added a couple of new weapons, like one car and, actually, that's all. The plot intersects with the original GTA IV and it is pretty interesting to see Nico from a different point of view (not as a main character). However, the plot that is not related to forth part is rather boring. All thing considered, I would put this episode 6/10.
On the other hand, in TBoGT we are dealing with a total opposite thing to TLaD. They added a huge amount of weapons, a bunch of cars and helicopters. The plot is not drawn out and interesting, if in TLaD the amain character was a friend of Niko and his gang, then in TBoGT the protagonist is at enmity with him. The secondary tasks were added, which gave the add-on some charm. This part came out with a bang and I give it 9/10
The result of the whole game is 8/10.
Let's start with TLaD: the add-on turned out to be meager as they added a couple of new weapons, like one car and, actually, that's all. The plot intersects with the original GTA IV and it is pretty interesting to see Nico from a different point of view (not as a main character). However, the plot that is not related to forth part is rather boring. All thing considered, I would put this episode 6/10.
On the other hand, in TBoGT we are dealing with a total opposite thing to TLaD. They added a huge amount of weapons, a bunch of cars and helicopters. The plot is not drawn out and interesting, if in TLaD the amain character was a friend of Niko and his gang, then in TBoGT the protagonist is at enmity with him. The secondary tasks were added, which gave the add-on some charm. This part came out with a bang and I give it 9/10
The result of the whole game is 8/10.