Enemy deployment: a new switch in the Setup menu. When it is on, tough patrols of heavy zombies and werewolves fall from the sky as meteors into the wild, with a blast where they land and a message on screen.

The patrols roam around the wilderness and fight anyone who comes close, but they never march on the Core.

A new patrol falls every one to three minutes, in the breaks between waves as well. The patrols get bigger as the waves go on: one or two zombies at the start, up to six to ten after wave 30. There are never more than 50 patrol zombies at once.

Patrols land away from roads, shops, crates, portals, trees and water, and never right next to a player.

Underworld: a new dark underground map with glowing lava pools, flames over the lava, stalagmites, bare dead trees and dark rock, lit in red and black. Pick it with the Biome button in the Setup menu.

Underworld sound: its own dark music, and a low lava rumble that grows louder as you walk up to a pool.

Map edge hills: the ring of stones around the map is gone. Big rolling hills now close in the map in all four biomes, and a soft mist lies at their feet in the Forest and the Jungle.

Fog: in the Swamp and the Underworld soft see-through clouds drift around wherever you look. They fade away around the Core, the shops and the roads.

Skies: every map has its own sky behind the hills.

Out to the hills: trees, rocks and plants now fill the land all the way out to the hills, and you can walk a bit further toward them.

Wildlife: harmless butterflies flutter over the Forest and the Jungle, crows circle high overhead, and frogs sit and hop by the Swamp ponds.

Fireflies: little glowing lights drift around in the Swamp.

The animals keep away from the Core, the shops and the roads, and scatter when a player or a zombie comes close. You cannot bump into them.

Meteorite rain: in the Underworld small meteorites fall around the players and the bots. A dark shadow shows where each one will land and shrinks until the impact, then a small blast hurts every player and bot in it a little. Zombies are never hurt. Nothing lands in the Core or the shops. The shadows also show on the map as red rings.

Map: the lava and the swamp water now show on the map.

Pictograms: the names floating above the shops, the supply crates and the portals are replaced by small round pictograms (a gun, a cross, a star and a pillar for the shops, a crate for the supply crates, a skull for the portals). They keep the same size on the screen wherever they hang. A crate that is ambushed turns red.