The game starts off by keeping things close to home -- the Flynn home to be exact -- with the Gelatin Dimension. Initially, you take control of Phineas, with Ferb being controlled by the CPU. You can switch between the two using the 1 Button, or take full control using the game's drop-in co-op system. Over time, you'll unlock new characters as the plot advances, some of which are automatically added to the team while others must be purchased using tickets.
The controls are pretty solid, with most of it being button-controlled. For those wondering, motion control isn't a big component here. A shake of the Wii Remote is typically used to execute your melee attack, or free you when trapped in a gelatin cube. So any worries of that nature should be put to rest. Your main attacks come from six different gadgets that you'll be equipped with over the course of the game. Continued use will level them up, and by visiting Workbench areas within each location you can upgrade things like ammo capacity.
To get past some obstacles, the boys will have to create some inventions. At certain points in a level, a blueprint will appear, identifying nearby parts you'll need to collect. Other occasions call for different solutions, like firing a baseball through a hole and controlling it inside a small shaft.
Beyond your starting point, there are five other dimensions to travel to, each presenting new ideas than the last. Aside from the standard platforming stages, there are also boss fights and flight missions. At the end of each level, you'll get to use any Gold Tokens you collected to play bonus games where you can earn tickets to unlock different sorts of rewards. On a similar note, there are plenty of extras to be sought after including medals and character skins. The game definitely keeps you busy, but for how long? Time will tell.
I hope that's given you a bit of a taste for what the game is like; you can look forward to my full review soon. To assist with the wait, I've also prepared a couple videos of in-game footage which can be found on our YouTube channel, WiiloveitTV. Be sure to take a look at the vids if you have time, and please do let me know if you have any general questions about the game.