Aliens Infestation will be one of the last games released on the DS. With SEGA, Wayforward and Gearbox at the helm, it should be a no brainer that this game is good.
If you have ever played Alien3, you will love this game, in fact if you like games such as Metroid, Castlevania, Contra or Metal Slug, you should buy this game.
It has a really nice old skool polish in regards to graphics, sound and atmosphere. The game is quite scary when played with earphones and there is always a sense of urgency for you to keep progressing to see where the game will take you next.
The aliens themselves look and sound fantastic and the boss battles are fairly epic and frantic. This game is rather short, however multiple playthroughs are encouraged as you can then use different marines to see different dialouge. It is also quite challenging and reminds me of the good old days when 2D gaming was king.
All in all, I give this game an 8/10.
Support the developers, the DS and 2D gaming by getting this as soon as you can.