The document describes several app concepts, including Pizza Ninja which is a game where the player delivers pizzas without being detected, Brew Database which keeps track of drink preferences, Steam Legion where players build robots to battle other players, Technobug where the player takes over machines to solve puzzles, Urban Thasaurs which converts words into slang, and Timed Crisis and Bulletcam which are camera apps with simulated weapon effects and time-based pranks.