Portal Lock

" *Whirr* *Clink* *Clank* "

Portal Lock
A somewhat old-fashioned device which stops the gates being opened during the 20 minutes immediately before the attack. The gates still have to be closed manually.
Category	Buildings
Sub Category	Wall Upgrade v1 buildings
Unlocked by	Wall Upgrade v1
Upgradable
Defence	5
Effect	from 23:40
Action Points cost	15
Resource cost	×2 ×1
Unlocks	See list
Portail

These are the sounds of the Portal Lock. Invented to keep idiots from drunkenly walking out and inadvertently killing everyone, this complex chunk of metal stops the gates from opening! Guaranteed to keep the zombies out as you sleep safe and snug in your hovels.

Use

• Locks the gate so it cannot be opened after 23:40 game time.
• The gates still must be shut manually for the lock to take effect.
• Building it gives 5 to the town.

Upgrades

Main article: Building upgrades

Level	Reward
Base	5
Level 1	20 (+15)
Level 2	50 (+30)
Level 3	80 (+30) + no needed to open the gates before midday
Level 4	-
Level 5	-

Notes

• In Season 3, the Portal Lock no longer provides 2 .
• Building the Portal Lock is sometimes frowned upon by citizens as a waste of materials, especially in the first two or three days. However it is handy against idiots and griefers, but make sure that everyone gets inside before you close the gate, since you can't open the gates for them after 23:40 game time.
• In Season 16:
  • Portal Lock building category has been removed and migrated to Wall Upgrade v1.
  • Portal Lock is now an upgradable town project.

Construction Sites Wall Upgrade v1 Great Pit • Great Moat • Spiked Pit • Old-school traps • Scavenger's Gallery • Wall Upgrade v2 • Inner Wall • Third Wall • Überwall • Evolutive Wall • Metal Patches • Spiked Wall • Slip 'n' Slide • Shredder Wall • Zombie-shredder • Screaming Saws • Wooden Fencing • Small Fence • Barbed Wire • Bait • Plywood • Concrete Reinforcement • Armour Plating • Armour Plating v2 • Armour Plating v3 • Extrawall • Portal Lock • Automatic Piston Lock • Last-minute Lock • Reinforced Gates • Ventilation System • War Mill • Saniflow Macerator • Emergency Supplies • Wood Plating • Guerilla Traps • Rubbish Heap • Mount Killaman-Jaro • Spikes • Pits • Bomb Factory • Abject Panic • Frat House Pump Water Catcher • Drilling Rig • No Holes Barred • Divining Rocket • Eden Project • Mechanical Pump • Divining Rods • Water Purifier • Water Filter • Vaporiser • Boiling Fog • Acid Spray • Gas Gun • Sprinkler System • Mist Spray • Water Turrets • Shooting Gallery • Hydraulic Network • Faucet • Decon Shower • Sluice • Shower • Nature area of the Survivalists • Vegetable Plot • Fertilizer • Grapeboom • Grenade Launcher • Vitamin Mines • Apple Tree • Ravaged pumpkins • Scarecrows • Mines Workshop Factory • Building Registry • Defensive Adjustment • People's Court • Technicians Workbench • Ministry of Slavery • Altar • Butcher • Abbatoir • Cremato-Cue • Pigsty • Henhouse • Central Cafeteria • Small Café • Central Laboratory • Gallows ( Chocolate Cross during Easter Festivities) • Meat Locker Watchtower Observation platform • Scanner • Upgraded Map • Scouts Lair • Predictor • Lighthouse • Battlements • Guard Tower • Guardroom • Miniature Armory • Swedish Workshop • Manual grinder • Pet Shop • Filtering gutters • Tamer Experiment Center • Catapult • Upgraded Catapult • Small Trebuchet • Searchtower • Cannon Mounds • Rock Cannon • Railgun • Plate Gun • Brutal Cannon • Public lights Foundations The Big Rebuild • False Town • Underground city • Labyrinth • Garbage Dump • Organized Dump • Dump Upgrade • All or Nothing • Fortifications • Community Involvement • Urban plan • Defensive Focus • Cinema • Air Strike • Firework Foray • Bonfire • Hot Air Balloon • Giant BRD • Buzzard's Wonder Wheel • Giant Sandcastle • Reactor Sanctuary Soul Purifying Source • Hammam • Pool • Small Cemetary • Coffin Catapult • Infirmary • Architect's Study • Builder's Merchant • Crow Statue • Blue Gold Thermal baths