1f:T701,

Welcome to the Hogpen! Hogball is a 2-on-2 capture the flag game with a twist.* Each team's flag is blocked by a series of teleporters. Entering these teleporters will send you directly into a killball. So, in order to score, you must play..HOGBALL!

First, use a warthog to knock the golfball into your opponents' goal...indicated by the flag icon. Doing this blocks a receiver node inside the goal. Next, jump out of the warthog and run directly into the killball. This causes you to respawn on your opponents' flag platform**. With the receiver node blocked, you may now safely grab the flag. The flag scoring point is at the same point you pick it up. The ball resets to the middle of the court after 30 seconds in the goal, so move quickly to score the flag.

Here is a link to the hogball promotional video on youtube. It helps explain the game and shows some gameplay.
YouTube - Introducing: Hogball

*While Hogball is designed for 4 players, the current gametype and map support up to 8 players. If more than 2 players are on a team, the game chooses the 2 drivers at random and the remaining 1 or 2 players spawn in the Spectator Box high up at halfcourt. From here they get a great view of the action and wait for their chance to drive next round.

**After dying, upon respawn you run faster for 15 seconds. This allows you to quickly score the flag or make it back to your vehicle.