Onslaught (Due March in Europe)
Onslaught is a first person shooter which focuses on blasting a massive number of enemy creatures to feel the exhilaration. The story is based on the outer planet in the near future. The massive number of enemy creatures will try to attack the player. In the game you use various types of weapons and battle against it to complete the mission and proceed in the story. Also, there is a mode that uses the Nintendo Wi-Fi connection to compete against the players, up to 4 players, all around the world.
Here's the game's page at Hudson Soft's site: