Dome Keeper: Laser Dome Upgrade Priorities and Defense Guide

To run an effective Laser Dome defense in Dome Keeper, upgrade laser tracking speed before investing heavily in raw beam damage. Flying spitters and split-angle spawns deal continuous chip damage if your beam rotates too slowly to intercept them across the dome. Pair early rotation upgrades with baseline drill and carrying improvements so your resource hauls consistently outpace combat scaling.

Laser Upgrade Order and Resource Costs

A slow beam cannot cross the dome in time to stop ranged aerial units firing from opposite sides. Purchasing tracking speed first lets you swing between horizons to neutralize flyers before their projectiles land. Once rotation is secured, alternate between beam damage and higher tracking tiers to keep pace with escalating wave density.

Target Prioritization During Combat Waves

Because the standard laser is a manual, single-target weapon, target choice determines how much damage penetrates your hull. Clear incoming threats in this order:

1. Ranged Flying Spitters: Target these first at the apex and upper corners of the screen. Leaving spitters alive allows them to chip away at the dome shell from outside melee range.
2. Heavy Ground Rammers: Shift the beam downward once the air is clear to eliminate charging rammers before their impact animations trigger. If rammers attack both sides simultaneously, focus fire on one flank until it is dead rather than splitting beam damage across both.
3. Ground Swarmers and Crawlers: Sweep remaining melee units last. Their individual strike damage is low, making them safe to clean up once high-threat burst units are gone.

Balancing Mining Upgrades With Dome Defense

Over-investing in dome defenses during early rounds slows your mining progression, which limits your total iron income. Conversely, ignoring defenses leaves the dome vulnerable to sudden wave spikes around wave ten.

• First Two Iron Veins: Spend your initial resources on Drill Tier 1 and Carry Capacity Tier 1. This enables you to transport clusters of four to five iron blocks in a single trip.
• Subsequent Returns: Direct your next iron hauls into Tracking Speed I and Hull Strengthening at the dome console.
• Combat Assessment: Treat every defense phase as an upgrade checkpoint. If the dome sustained hull damage in the last attack, allocate your next iron delivery to weapon damage or defensive support rather than deeper mining tools.
• Return Timing: Head back to the control seat five seconds before the combat wave timer expires to ensure the beam is active the moment enemies spawn.

Gadgets and Cobalt Hull Preservation

Defensive and logistical gadgets offset the Laser Dome's manual targeting limitations:

• Shield Generator: Absorbs incoming burst hits from rammers while your beam focuses on distant flyers. Overcharge the shield with water rather than spending cobalt on repairs.
• Crowd Control (Stun Laser or Repellent): Slows down approaching groups, buying extra rotation time for your main beam.
• Mobility Tools (Teleporter or Lift): Eliminates the 15-to-25-second climb up the central shaft from deep rock layers, allowing you to mine until the alert flashes red.
• Cobalt Rationing: Avoid using cobalt on minor cosmetic scratches early in a run. Hold your cobalt reserves until the dome reaches roughly half health or until you unlock repair efficiency upgrades that restore more hull per unit consumed.