Left 4 Dead 2 features a message that says "Otis, out of film, No helicopter, Zombies are too fast, Not going to make it, Frank West" while Dead Rising 2: Case West features a message on the wall referencing Left 4 Dead. These brands are references to the Heavy and Pyro. Team Fortress 2 features three promotional items based on Left 4 Dead 2 as promotional items unlocked by purchasing Left 4 Dead 2 on Steam.While in Left 4 Dead 2 Two brands of food sold in the park are "Heavy Gulp" and "Pyro's Hamburgers". Some of the areas in Left 4 Dead resemble areas in Counter-Strike.