This isn't really a review on a game, more of a console. Today I'm going to review the Nintendo DS.
Let me start right off the bat and say that I was waiting a long time for this. It had a few extra features that I didn't know about which were good, and some that I knew about that sort of let me down. A lot of people are talking about if the rival portable gaming console, PSP, will be what kills Nintendo's portable gaming line. Anyone who's held a DS for more than ten minutes can tell you the outcome: The DS has NO competition. Not only is it out months earlier, but it has hundreds of games open for it. It has so many games available because it features two game slots; one for DS games, one for GB/GBA games.
The resolution of the screen is fantastic. Of course, an LCD screen is expected to do that. Now don't get me wrong; this system is far from perfect. Here's how:

High Points of the DS:
-Great graphics for such a small screen
-Tons of games available for it right off the bat
-Innovative Touch Screen
-Decent battery life
-Wireless game connection
-Wireless chatroom
-Built-in microphone for multiplayer games
-Built-in clock/calendar/alarm
-Incredibly compact cartridges (Seriously, like 1/4 the size of GBA games)
-Stereo sound

Let-downs of the DS:
-While the battery life is decent, it's not as good as the GBA SP
-When you turn it on, you have to make a choice of playing a GBA game, DS game, go to the chatroom, or options menu. After you're done here, you have to turn off the DS and start all over if you want to go elsewhere.
-I really like the touch screen, but it gets dusty very easily. And since the screen is so sensitive, you have to be very careful when cleaning it.
-It's not as compact as the GBA. While it does still fit in your pocket, it's kind of uncomfortable
-Another issue with the battery life. After 400 complete charges are used up, the battery life becomes less efficient and will probably have to be replaced.
-Can't use the E-Reader with the DS
-Can't link up with GB/GBA for multiplayer. So if you have Pokemon Firered or Leafgreen and only have a DS, you are seriously screwed.

With that said, here's my final say on the matter: With all the game boy games, I'm glad Nintendo is making their new portable systems backwards compatible. Maybe not backwards compatible with older systems, but you can't move forward without sacrificing something of the past.
Final Score: 8.5/10
SUCK IT PSP!!!

Got the original in December of last year, and then traded it in for the DS Lite.
The Lite is superior to the original in every way in my opinion. Comparing the two is like night and day.
I do have more games for my PSP than my DS but the DS games I have are awesome. Castlevania: Dawn of Sorrow is a must buy for fans of the series and the genre. Two very fun puzzle games are Meteos and Zoo Keeper, both are highly addictive. I've also got Mario 64 DS, New Super Mario Bros. and Sonic Rush.
Personally I like both this system and the PSP, but the DS has some great games and a lot of good ones are coming up, such as Castlevania: Portrait of Ruin.

Can't really think of a score, all I'll say is if you have the money then buy it.

Edit: Okay I retract my comment. After getting bored with and selling all my games I have to say that the initial gimmicky goodness is gone. PSP just rocks this easily, most likely gonna sell my DS.