Zyrex defense
Zyrex are the swarm. The HUD tells you how many are flying and how many are on the ground before they arrive. Turret damage numbers were never published.
The lower-left line reads “The swarm attacks in:” and then a time, or “Now”. One official screenshot’s upcoming-wave panel shows 4 flying and 24 ground. Another frame, focused on the Core, shows a 13-hour timer while the Core’s red beam hits a tentacled shape in the caves. I treat those as two moments, not a timetable.
On the Front Line, the objective card, asks for two machine-gun turrets before you are expected to hold. Missile Launcher is a separate building. Players say its in-game description limits it to ground targets, so it does not answer a flying spawner. That description was quoted in a thread, not copied by me from a manual. One cluster of replies, one source.
The same thread says a flying spawner can sit outside turret range. The suggested fixes are another turret inside range, or sending a robospider. Concrete Defense Wall and Energy Dome are named buildings on the store screenshots (the dome is the blue shell over a structure). Their hit points are not published.
Enemy names I will print: Zyrex as the family name from the store and achievements. Bombardier, Rock Thrower, and Queen appear as stat labels and, for the rock thrower, in a review that describes stone-throwing units breaking buildings. I mark Bombardier, Rock Thrower, and Queen as provisional until a bestiary exists. Queen kills sat at 0.5% of players. Leviathan is a Wall World 3 word. It does not belong on this page.
No Room for Error — three waves in a row without repairing — was at 17.9%. That is the closest public measure of “defense was enough”, and it is still an achievement rate, not a damage formula. Exterminator I through IV step up kill counts. I do not invent the thresholds; they are on the achievement list.
Known Zyrex names
5 entries
| Name | Category | Use | Unlock | Cost | Output | Power | Version | Sources | Checked |
|---|---|---|---|---|---|---|---|---|---|
| Zyrex | Enemy — swarm | Generic hostile species attacking the colony in waves; waves are procedurally generated and listed in an 'upcoming wave' panel with flying and ground counts. | Steam store description, official FAQ, patch notes, screenshots. | — | — | — | 1 independent source | 2026-11-13 | |
| Flying spawner | Enemy — air | Airborne spawner that can sit outside turret range; a player reports missiles do not target it. | Steam thread 'Flying spawners unkillable?'; wave panel shows a separate flying count. | — | — | — | 2 independent sources | 2026-11-13 | |
| Zyrex Bombardier | Enemy — ranged | Ranged attacker referenced by the global achievement stat id '15Stat_Combat_ZyrexKillBombardier'. | Steam global achievement stat ids (3.8% of players have the related kill achievement). | — | — | — | 1 independent source; provisional label | 2026-11-13 | |
| Zyrex Rock Thrower | Enemy — siege | Throws rocks at buildings; referenced by stat id '17Stat_Combat_ZyrexKillRockThrower' and by a negative review describing 'large boys who rock throw my buildings'. | Steam global achievement stat ids + one user review. | — | — | — | 2 independent sources | 2026-11-13 | |
| Zyrex Queen | Enemy — boss | Boss-class zyrex referenced by stat id '16Stat_Combat_ZyrexKillQueen'; only 0.5% of players hold it. | Steam global achievement stat ids. | — | — | — | 1 independent source; provisional label | 2026-11-13 |
Questions
Why do flying spawners feel unkillable?
Players report they hover outside turret range, and that missiles are described as ground-only. The fix they posted is range or a spider, not a hidden damage type.
What turret should I build first?
The objective card asks for two machine-gun turrets. That is the only first-turret order with a source.
Sources
- Flying spawners — 1 player discussion — checked 2026-11-13
- Steam store screenshots and tags — checked 2026-11-13
- Steam discussions — flying spawners — checked 2026-11-13
- Achievement percentages — checked 2026-11-13
Guides · Zyrex list · Beginner