Pokemon Heartgold was released in 2010 and is the remake of Pokemon Gold which was originally released on Game Boy Color; there is also a remake of Pokemon Silver called Soul Silver as well. Pokemon Heartgold was the last good pokemon game released on the Nintendo DS (in my opinion) because Black and White 1 and 2 were a disappointment and the first pokemon game i own that i never beat.

Graphics: A pokemon game with bad graphics is impossible because pokemon has its own unique art style and has an awesome graphics engine which works very well for pokemon.

Sound: The sound is awesome, the original soundtrack was remade and later on in the game you can get a "Game Boy Pocket" item that lets you switch to the original soundtrack. Pokemon games always have a unique sound but can feel repetitive after heard for the millionth time

Addictiveness: Pokemon is like a drug once you play it, you cant put it down and the end of the game will leave you wanting more.

Story: You start in the Johto Region and its like any other pokemon game, Battle through the regions gym leaders, stop the evil organization in the region (in this game you fight Team Rocket) and go to the Pokemon League to be the pokemon champion. Even though the story seems the same in every Pokemon it seems as if each story is unique in its own way

Depth: The game comes with a pokemon themed pedometer called a Pokewalker where you download your pokemon to it and the way it works is that as you walk your pokemon levels up and the pokewalker if im not mistaken has an app where you can catch pokemon and an app where you can get items.
The game connects Johto and Kanto together allowing you to journey to both regions.
The game has a new thing called the Pokemon triathlon kinda like a Pokemon Olympics
The game has 451 Pokemon but 42 can only be gotten if you trade pokemon from the past games and some special legendary pokemon from wi fi events.
You can get the following legendaries in this game:
Ho-Oh, Lugia, Articuno, Zapdos, Moltres, Mewtwo (must get by trading in soul silver), Kyogre, Groudon (only by trading in Soul Silver), Raquaza, Arceus (only obtainable by trading now), Diagl,Palkia,Giratina (must have arceus for these 3) Raikou,Entei and Latios and Latias


Overall:This game is great, there is a lot to do, many pokemon to catch and a great story. If you dont have this game i will have to question your thinking

I definitely think you have some solid reasons for why you consider this is a good game, but I think you could elaborate on each part a bit more. For instance, you say that pokemon graphics are unique, but you can go more in depth by answering what makes it unique. How do the graphics in this game stack up to older/newer pokemon games? How do the graphics contribute to the enjoyment of the game?

You should try to set it up so that you can continue to go into greater detail with each aspect of the game. You should also try to highlight on the significance of this game to you, what made you like it? Why is it worth your time to play? A review should aim to either persuade/inform the reader on the good or bad aspects of the game, and that should ultimately allow them to make a final decision. By making the review more subjective, the reader can better understand the pros/cons of the game. If you do this for each category, you will end up with a much more descriptive, insightful review. 

Don't let this discourage you however, all good things require practice. If you continue to write reviews and listen to the constructive criticism others provide, you will see an improvement in your reviewing and your writing. I hope this helps, and I look forward to reading your future reviews!

Razor-987 : i need all the criticism i can get im new to reviewing, thank you for your feedback

To continue of what razor said: comparing with other games is essential, especially for a franchise like Pokémon. You breifly did it for you Halo (Metal Gear?) reviews. Just do not be afraid to speak your mind about what makes the game great or not!