Structures and turrets synergies
Structures scale with Engineering. Your %Damage and Attack Speed do not apply to them; they use their own Structure attack speed, and they cannot crit unless Pile of Books is owned.
Effects that reward it Scanned from game-file effects
Clockwork Wasp item+10% Structure attack speed
Lighthouse item-1 Engineering for every 1 Structure you have
Pile of Books itemYour structures can crit
Rusty Antenna item+15 Structure Range
War Hammer weaponResets the cooldown of all offensive turrets when attacking
Sources
Bleeding Turret itemSpawns a turret that shoots bullets dealing 8 (+100% Engineering) damage. Enemies hit take 10% more damage for 5 seconds (max 30%)
Bot-O-Mine itemSpawns a Bot-O-Mine structure that shoots bullets dealing 10 (+100% Engineering) damage. It also spawns a landmine every 5 seconds dealing 10 (+100% Engineering) damage in an area
Dart Trap itemA dart trap spawns every 12 seconds, firing 6 darts dealing 8 (+100% Engineering) damage- Explosive Turret itemSpawns a turret that shoots explosive bullets dealing 25 (+150% Engineering) damage in an area
Incendiary Turret itemSpawns a turret that shoots flames dealing 8x5 (+33% Engineering) burning damage
Landmines itemA landmine spawns every 12 seconds dealing 10 (+100% Engineering) damage in an area
Laser Turret itemSpawns a turret that shoots piercing bullets dealing 20 (+125% Engineering) damage
Medical Turret itemSpawns a medical turret that shoots bullets healing 3 (+5% Engineering) HP
Pocket Factory itemKilling a tree spawns a turret
Turret itemSpawns a turret that shoots bullets dealing 10 (+80% Engineering) damage
Tyler itemSpawns a little guy that slowly shoots 10 piercing lightning projectiles around him for 12 (+90% Engineering, +90% Elemental Damage) damage each
Awl weaponA dart trap spawns every 12/9/6/3 seconds, firing 6 darts dealing 8 (+100% Engineering) damage
Screwdriver weaponA landmine spawns every 12/9/6/3 seconds dealing 10 (+100% Engineering) damage in an area
Wrench weaponSpawns a turret that shoots bullets dealing 10 (+80% Engineering) damage
Characters
BuilderEvery 5 uncollected materials are converted into 1% Structure attack speed and 1 Structure Range at the end of a wave
Streamer+2 Armor for every 1 Structure you have
Technomage+5% Structure attack speed for every permanent 1 Elemental Damage you have
Rule source
The stacking rule is datamined from the recovered game code (weapon_service.gd); no 1.2 patch note changes it. Effects come from the game-file tables with the 12 November 2026 patch.
Reviewed . PC 1.2.