The mood of Star Trek: Redemption is an important thing for all players to be aware of before they create a character. We are a one-ship, exploration-focused game, and therefore take many cues from Star Trek: The Next Generation, though occasionally we have an overarching plot that is more reminiscent of Deep Space 9 or Voyager.
One may notice a marked preference for dark, complex, mature themes and stories in the plot list. That is exactly what the mood of this plot is-dark, complex, rich, and mature. This is not a game for those who wish only happy stories. There will be bad times. The characters will lose sometimes. They will be injured. Some may die. If you don't like these sorts of stories, you likely won't enjoy playing here.
That's not to say there won't be lighter moments. Comedy is a useful and neccesary contrast to drama, and there will be some plots that may be entirely comedic, as well as ongoing jokes and gags. A feeling of community among the crew is not only desired but vital to the story, and this is often best cultivated through the crew sharing lighter moments, having funny stories as well as tragic ones to tell in Ten-Forward. We hope to have a close-knit group, with strong relationships, though there'll certainly be rivalries and dislikes (which will serve the story all the better.)
Of course the name of the game, and the ship, is Redemption. There will be spots of hope and light even in the darkest of times. This is how it is in all good dramas; Even when things are at their worst, there is still a glimmer of hope. If you enjoy rich, mature themes, complex plots, roleplay that's both fun and moving, and camaraderie with a group of like-minded people, all telling a story together, then this is a place you will enjoy.