Darren Grey, Ido Yehieli, Jeff Lait, corremn, and Joe Bradshaw talk about creating a roguelike game in a week, defining success in the 7DRL challenge, the evolution of roguelike games, using LibTCOD for game development and the debate on color palettes, exploring aesthetics and game making programs, using T-Engine for game creation, focusing on game development without distractions, choosing one gimmick for a game, the importance of transparency in game design, providing instructions and bug fix releases, and making a successful game through uniqueness and planning.