Sierra Entertainment was the publisher for Tribes Aerial Assault. Tribes Aerial Assault was developed by Inevitable Entertainment. As Tribes Aerial Assault was a port from the PC game Tribes 2. Essentially making it a simplified Tribes 2 for the Playstation 2 console. Here is an interview with Chris Mahnken. From years ago. The original source can be found here. 

Arnold Katayev: For starters, what goal is the Tribes team hoping to achieve with the release of Tribes Aerial Assault. 

Chris Mahnken: Our goal with Aerial Assault is to introduce console players to the fast and fun world of Tribes. We want to deliver the pure essence of Tribes - speed, action, and excitement. 

AK: Since the game's announcement last May at E3, how far along has Tribes: AA come along? How consistent is the game engine with the frame rate.

CM: The game is coming along well. Complex situations with a lot of AI and player models on the screen at the same time can cause some slow-downs, but our goal is to get as close to a rock-solid 60fps as possible.

AK: How long has Tribes been in development for the Playstation 2?

CM: Tribes: Aerial Assault has over a year of development behind it now.

AK: How complex is the game's graphics engine. How much additional detail, in contrast to the PC version, has Inevitable implemented?

CM: There have been improvements in nearly every aspect of the graphics, such as better effects, better textures, and improved visibility. 

AK: How many players can we expect to duel against in the PS2 version of Tribes?

CM: We're shooting for team sizes of between four and eight, so you'll probably see 10-16-player games online. All the maps have been re-tooled for faster, tighter game-play to support the smaller teams. With appropriate bandwidth you can host games with up to 32 players.

AK: Is the team currently looking forward or planning on a PC or Xbox version, so that PS2 owners have more opponents to face?

CM: Right now we're focused on the PlayStation 2 version. It's too early to talk about other consoles, though both are certainly a possibility.

AK: With Bungie's Halo touted as one of the finest console FPS titles, how well do you think Tribes: AA will hold up?

CM: Well, they're definitely completely different games. HALO is primarily a single-player game with some basic multiplayer functionality. Tribes Aerial Assault is primarily a multi-player game with some single-player content. We're not trying to compete with HALO's single-player story with Tribes Aerial Assault.

AK: Has the Tribes: AA team gotten to know the ins and outs of the PS2 hardware? How long did it take to get adjusted?

CM: Inevitable are very experienced console developers, so it didn't take them long at all to come to grips with the intricacies of the PS2.

AK: Can you discuss the features that Tribes: AA will include?

CM: The most notable addition is the single player campaign. While Aerial Assault is still primarily a multi-player game it does have a nice campaign to bring the player into the universe. It's a great way to get your feet wet before going online and taking on your friends. From an in-game equipment standpoint we've added 4 exclusive vehicles, which are all single player controllable. We've also put a lot of work into tuning the game specifically for the PS2 controller, and as a result we've added some things - like aiming hints and assistance - which you wouldn't see on a PC product. 

AK: With the massive 40GB HDD, will PS2 owners be able to download character skins, new maps, new weapons, modifiers, among other extras, like a typical PC FPS title?

CM: Tribes: Aerial Assault does not support the PS2 HDD.

If you would like to read another interview of Chris Mahnken. One can be located here and is titled:

Since Tribes Aerial Assault was the first game developed for online play on Playstation 2 and did not offer communication for players. The developers noticed a player effort to start up a community. Many of them joined the powow forum and would help continue to support the game after it's release. Picutred above is a list of developers who joined the powow forum. The full email list can be viewed on the wayback machine here: https://web.archive.org/web/20040105002658/http://www.powow.com/tribe/tribeaalist.html

Known to the Tribes Aerial Assault Community as Ricochet. Michael D. Traub was the largest contributor to Tribes Aerial Assault by far. He was critical in releasing the AADS servers. Which the tribal tournaments were held on. Along with other members of the community. The AADS server gave Tribes Aerial Assault players the ability to remotely host games instead of player host them. The AADS archive page can be found here: https://web.archive.org/web/20060718063211/http://aads.gamerplug.com/