Star Trek Online
Star Trek Online is a MMORPG set in the Star Trek universe.
In the game you are the captain of your own ship and are also able to beam down to planet’s surfaces and explore them on foot.
There is a large solo campaign, with plenty of free content to entertain you. As you’d expect the content draws heavily from the Star Trek universe and the best part of the game is how much it stays true to the series.
The game does of course feature ways for you to spend your money – you can get a subscription to the game or purchase some premium items, but there is more than enough stuff to do if you wish to keep you money in your pocket.