The PC version of the Garfield 2 tie-in game defaults to a 4:3 aspect ratio. According to PCGamingWiki , you can force it to run in through a registry edit:
: Critics generally describe it as a film aimed strictly at younger children. Reviewers from Roger Ebert found it "funnier and more charming" than the first installment, while others at Common Sense Media warn parents about mild crude humor and slapstick violence. Garfield 2 1080P
Modify the hexadecimal value to 0x04380780 to set the resolution to 1080P. The PC version of the Garfield 2 tie-in