This extra mode differs from the regular demo stage in that you can fly around the screen indefinitely and you don't have the ability to move a targeting reticule - you simply fire forward just as in the original Space Harrier. You can also run along the ground (watch out for trees!) and there are a couple of new enemies, explosions and sound effects that draw inspiration from Yu Suzuki's retro masterpiece. It's a really cool addition to the (already great) demo and hints at some of the bonus stages we can potentially expect in the final game.
The original Space Harrier did make an appearance on the Dreamcast in various guises, but we missed out on a home port of Planet Harriers even though it was rumoured. Happily though, Xenocider looks like it could be the game to fill that void, and if you actually needed yet another reason to check out this project then surely this is it.
Grab the new Space Harrier demo by heading to the Xenocider Kickstarter update page and clicking on the 'playable demo' download link. You can then select the new stage from the main menu.