Star Citizen, the upcoming PC space sim from Wing Commander creator Chris Roberts, has released teaser trailers for its first-person shooter, racing, and planetary exploration modules.

According to the short statement on the game's website, a different, still unnamed studio is working on the FPS module, which will allow players to board enemy ships and fight other players from a first-person perspective. The 40-second video doesn't show any gameplay, but it is supposedly in-engine. According to the teaser, we should learn more about it during PAX Australia. Chris Roberts previously said that the plan is to release the FPS module after the planetside module (below) and before the single-player portion of the game called Squadron 42.

The trailer for Star Citizen's racing module gives us a much better idea of what to expect. It will be added to the game in v 0.9, and allow players to compete for the "Murray Cup." As you can see in the video, it looks like a straightforward racing game, with players flying their ships through checkpoints and boosts around a track.

Finally the Roberts Space Industries Constellation Commercial gives us our first look at Star Citizen's planetside features. As Roberts explained in a previous post, atmospheric combat and ground exploration were among the most common feature requests for Star Citizen. In order to achieve it, Star Citizen had to form a team dedicated to researching and developing procedural generation technology (like the one No Man's Sky uses), which it did when it hit its $41 million funding stretch goal.

The trailer, which riffs on Stanley Kubrick's 2001: A Space Odyssey, doesn't show much gameplay, but it does show us how the game's Aquila spaceship can land and deploy a ground vehicle. The planetside module should release to backers in fall 2014.

For more on Star Citizen and Roberts himself, check out part one and part two of GameSpot's interview with the legendary designer.