A roguelike game normally has a single player. This player is a person in the real world who controls a single character inside the world of the game, typically represented in ASCII roguelikes with the symbol '@'. This character is the protagonist of the game, or "player character". People will often speak loosely and say "player" when they mean "player character", but the difference is an important one. If player characters die frequently during your roguelike, that is normal. If players frequently die while playing your roguelike, that is disturbing.