Well, if a fictional vessel actually has an escape pod in whatever work of fiction it comes from, it might be a nice addition to an addon if anyone has time to make it.
But otherwise, in space it's better to jettison anything malfunctioning in a dangerous way and stay with the ship. Your "lifeboat" would probably be an inflatable "tent" that stays inside the ship, but can hold in air if there aren't any compartments on the ship that can still hold pressure.
Lifeboats are necessary on water-ships because ships tend to sink when damaged in certain ways. Spacecraft just keep on going, and the only things the passengers have to worry about are radiation, running out of air, food, or water, (which they will probably have less trouble with if they stay on board, especially the radiation issue), and explosions and other such mishaps (which can be more neatly dealt with by jettisoning the thing that's about to explode than by jettisoning everyone on board).