Sure, everyone knows Angry Birds, but before Angry Birds there was an arguably much better and much more action-packed game: Plants vs. Zombies. This is a short-medium length sentence building game based on PopCap games' award winning tower defense title, with a "Get the Zombie" option.
The style of play is very simple; the students (or the teacher) choose a square. They then have to fill in the blanks of the key sentence using that square's corresponding row and column elements. Click on the square to see what reward they get for doing it. As an example, I've included pictures and words from the Gr. 5 Lesson 12 ("Can you tell me about your family?") key sentences. You are of course encouraged to add your own.