Flash Point: Fire Rescue
Publisher: Indie Boards & Cards
Designer: Kevin Lanzing
Flash Point is definitely not as popular as Pandemic in the greater community, but at my table it definitely reigns as the go-to coop game. You and your bravest friends will team up to save a bunch of strangers (and their pets) from a burning house. It is very similar to Pandemic (which, don't get me wrong, is an amazing game) but is a lot less stressful and it may just be that the scope of the game is limited to a single house with a few people (and their pets) rather than the entire globe.
The game also has a lot of funky cool ideas in it, like exploding hazardous materials, shockwaves, and fire trucks. Fire trucks man! Riding on a fire truck is super cool. Just ask my five year old son.
If you get tired of the weight of Pandemic, or are looking to try a really fun cooperative game then I would recommend trying Flash Point: Fire Rescue.