In Alvin and The Chipmunks: The Squeakquel, you can play as any of the Chipmunks or the Chipettes. This includes Alvin, Simon, Theodore, Brittany, Jeanette, and Eleanor. There is no real difference between each character, other than the songs that the group will sing, so feel free to use whoever is your favourite. Choosing just the Chipmunks will give you different songs than choosing just the Chipette. You can even mix and match them for duets and other songs!
In the game itself, you can fly to 25 different locations before the ultimate finale concert where all the Chipmunks and Chipettes perform together on stage for thousands of adoring fans. In order to unlock these levels, you just need to keep playing and passing each song.
This also goes for unlocking all the songs in the game, including Chipmunk originals as well as popular songs from modern musicians. Do note that, while in Multiplayer and Jukebox Mode, you can play any songs that you have already unlocked, but this will not unlock anything signficant for you. You must complete the main storyline in order to get most of the new stuff in the game.
Alvin and The Chipmunks: The Squeakquel features three mini-games that you can play with each song. These games uses the Wiimote and nunchuk in different ways but all the games have something to do with rhythm and timing.
If you find yourself having trouble, try the game on an easier difficulty and work your way up. You can choose between Normal and Expert and switch the difficulty setting any time you want.
Since all of these games focuses on your rhythm and timing, you should never be playing these games with the TV on mute! Turn up the volume so that you can listen to the music clearly and let your body feel the music. Nod your head or tap your feet to the beat and you will find yourself performing better in all the games. If you want to, you can even stand up and play so that your whole body can move with the game.
The main mini game is probably the dancing game. Follow the arrows on the screen and move the Nunchuk and Wiimote accordingly. You need to watch the circles as they come in from off the screen and move towards the center area where all the arrows are. The left half of the hexagon are the controls for your nunchuk while the right half is for the Wiimote.
Nod your head in time with the music as mentioned above. The actions you need to perform will almost always be on beat with the music. The Wiimote and Nunchuk are not always sensitive to your movement. Try out a few songs waving them at different strength and speed to see what works best for you.
When the movement combos get harder and there are more things to watch on the screen, focus on the center of the screen and use the edge of your vision to catch where the floating circles are going. You will need good reflexes here, but this method is easier than trying to track all the circles from the edge of the screen all the way to the middle.
The second mini game involves you moving your icon on the left side of the screen up and down in order to catch the music notes and avoid the skulls and crossbones that are moving left from the right side of the screen.
This game probably has the least to do with rhythm and timing, but you can still find that it helps to keep a beat since the notes and skulls always appear at a regular interval of time. Chain together combos and don't be afraid to take a few risks in order to keep your combo going. The number of fans you get for having a high numbered combo is worth eating a few skulls.
When things start moving faster, focus your attention on the area just before your icon on the left. This should allow you to plan your moves a few milli-seconds before you need to make them. Again, good reflexes are needed here, but at least this game is fun and does not rely on touchy motion controls!
The last game has you catching music notes with your icon in a different way. However, this game is somewhat similar to the other games and if you follow the tips outlined above, you should do fine.