Those wanting to give Star Citizen from Roberts Space Industries a go can do so for free using one of two codes.
It is a 20GB download.
To get in on the free weekend, you will need to create an account and enter the code PAXEASTFREEFLY2K15. You have until the 15th to use it.
There is another code SXSWFREEFLY2K15 which is for the SXSW festival happening, and it will last until the 20th (thanks, Kraken).
Once donwloaded, players will be able to enter the Arena Commander space combat module and try out the Anvil Hornet F7C trainer ship.
Star Citizen is expected sometime in 2016 and it will be a 100GB download, so make sure your hard drive has enough space.