I'm not too sure about Freelancer either.
However, Team Fortress 2 is an FPS which is now free from Steam, and it is an amazingly fun game, with cartoon-style visuals that work
League of Legends is kinda like a different and unique spin on an RTS game, where you just control one champion unit, and you level him/her up in-game to get new items and powers to help you win. It's 3v3 or 5v5, and you have minions that auto-spawn as waves, and you can attack with them or without them, down multiple channels to try and get to the enemy's base and destroy it! But, there's one catch, there are two turrets defending each channel, and one turret defending the centre of the base, so it makes it a bit trickier, 'cause they hit hard! It's fun, you should try it as it's free to download and play!
I haven't got Minecraft myself, and I'm not too sure what you do
exactly, as I just have a rough idea, so I will let someone else explain
