Enemies & Bosses
Models
All enemies and bosses, as in the game – each type on its own lane. With “Damage” they lose health along the lane: facet by facet until they shatter. Click an enemy to see its stats, the mouse wheel zooms, holding the right mouse button pans.
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“Facets = lives”: under fire, crystals chip off facet by facet and shrink into the next smaller form – Quartz (hexagon) becomes Garnet (pentagon), then Pyrite (square) and Shard (triangle), until nothing is left.
| Enemy | Ability | Toughness | Armor | Tiles/s | From wave |
|---|---|---|---|---|---|
| Shard | Fast, swarms | ×1 | 0 | 2.2 | 1 |
| Pyrite | Standard | ×3.3 | 0 | 1.6 | 11 |
| Garnet | Armored (armor 10). | ×8.3 | 10 | 1.2 | 21 |
| Quartz | Heavy, many levels | ×18 | 4 | 0.9 | 51 |
| Needle | Sprints every 4 s for 1 s at 250% speed. | ×1.5 | 0 | 1.8 | 41 |
| Healstone | Healer: every 0.5 s heals all enemies within 2 tiles by 8% of their HP; several healers stack up to 24%. Healers don't heal healers. | ×4 | 0 | 1.3 | 61 |
| Diamond | Shield bearer: enemies within 1.5 tiles take 40% less area damage; single hits land in full. | ×13 | 6 | 1 | 81 |
| Agate | Shatters into 3 × Shard on death | ×7.3 | 2 | 1.3 | 91 |
| MicaFlyers | Flies: only towers that hit air targets can reach it; ground elements have no effect. | ×3 | 0 | 1.8 | 31 |
| SparkFlyers | Flies in dense swarms, very weak | ×0.8 | 0 | 2.4 | 101 |
| Geode | Grows a Shard every 3.5 s, at most 8 in total. | ×9.3 | 3 | 0.8 | 111 |
| Monolith | Heavily armored (armor 12); constantly regenerates 3% of its HP per second. | ×22 | 12 | 0.7 | 121 |
| Mirror | Crystal skin: only 20 % area damage, single hits +50 % | ×5.7 | 0 | 1.3 | 71 |
| Bulwark | Crystal skin: only 30% area damage; heavily armored (armor 20). | ×17 | 20 | 0.8 | 131 |
Toughness = hit points of all stages combined, as a multiple of a Shard of the same wave. Health and armor grow with every wave – the ratios between the types stay the same.
Bosses
Pyrite Colossus Wave 10
Shatters into 16 × Pyrite at 50%
Toughness ×60 · Armor 4 · costs 10 lives
Obsidian Wave 20
Keeps growing swarms of Shard
Toughness ×167 · Armor 4 · costs 10 lives
Prism Wave 30
Shield bearer: ALL enemies within 4 tiles take 40% less damage – area and single hits.
Toughness ×233 · Armor 8 · costs 10 lives
Moonstone Wave 40
Switches between ground and air every 5 s
Toughness ×333 · Armor 8 · costs 10 lives
Crystal Heart Wave 50
Constantly regenerates 2% of its HP per second. Life rain: every 0.5 s heals all enemies within 4 tiles by 8% of their HP (not healers).
Toughness ×467 · Armor 10 · costs 10 lives
Primal Crystal Wave 60
Constantly regenerates 0.5% of its HP per second; grows 8 × Pyrite every 4 s and splits into 2 × Primal Half on death.
Toughness ×600 · Armor 10 · costs 10 lives
Atlas Defense: co-op and controls
Create a room and share its eight-character code. Up to four players build on one authoritative map with separate wallets. The room creator can remove teammates. Chat opens with Enter or a click. On desktop it stays transparent and can be dragged. Teammates have small colored cursors; team markers last eight seconds.
Double-click an owned tower to select all owned towers of that type and level. Upgrade, specialize, change priorities or sell the selection together. Specialization shows total gold and the amount missing. On touch devices, choose a building and position, then confirm. The lower Build, Orders and More tabs can be collapsed.
Atlas, pylons and bridges
Pylon range comes first in the Atlas menu; Protocol Zero is last. Each pylon range level adds 3% of its original six-tile range, up to ten levels. Existing pylons and connections update immediately. The Atlas power radius remains eight tiles. The pylon limit starts at six and increases by three every 25 waves. Each pylon costs 100 gold.
A defence bridge costs 10,000 gold with shared funding. Choose a valid position on the crystal scar and north or south as the defence side. Ground enemies cross to that side; flying enemies are unaffected. A faint planning preview appears before building. Demolition gives no refund and waits for enemies to leave safely.
Difficulty, waves and gold help
Choose before starting: Relaxed (80% enemy HP), Standard (100%), Hard (125% and 15% extra combat/wave gold), or Ultra (150%, no extra gold). Relaxed and Standard use original Atlas prices; Hard and Ultra keep increased prices. Difficulty is locked during play and leaderboards have separate filters.
Every 25th wave adds another 15% HP. Clearing a milestone awards 250 gold per active player and repairs up to 10% of maximum Atlas health, rounded up. The reward is paid once. Hard's bonus does not multiply starting gold, transfers, refunds, casino wins or fixed milestone rewards.
Each connected player approves 0–25 early waves. The lowest approval applies; up to 25 waves may be active. Gold help transfers 50, 100, 250 or 500 gold to an active teammate without fees. Restart and quit need approval from all connected teammates.
Planning, daily maps and the crystal slot machine
The optional daily map uses the current date in Europe/Berlin as DDMMYYYY (13 October 2026: 13102026). Random maps and manual seeds remain available. Running maps never change at midnight. The wave preview highlights flying enemies, armor and swarms. The tower overview shows counts, levels, specializations, damage, kills and investment.
The crystal slot machine can run in a compact background window while you build. Automatic paid spins must be explicitly enabled and can be stopped. Free spins continue in the background. FPS appears at the upper left.
Rooms and chat stay in server memory and end on server restart. Game saves are disabled. Server leaderboards persist separately.
Compact controls
Click the Atlas in the center to open its upgrades. Wave approval is in the top bar; Space starts or calls waves early with the existing team approval. The lower action bar contains Bridge, Mark, Tower overview and Crystals & radio. Gold help and Leave room are in the co-op settings.
Crystal weapons, shards and radio
Build an owned tower on crystal ground, upgrade it to level 3 and choose a specialization (J/K). Then select Crystal upgrade in the tower menu or press L. Pay with shards. Each additional owned crystal weapon increases the price by 10% of the base cost.
Kills on crystal ground or in a Resonator field add shards worth 10% of the kill reward. Crystal weapon kills add another 10%. Fractions accumulate; active teammates share whole units.
Radio: kills contribute 0.25 and combos 0.1, limited by a shared budget. The budget refills at 36 radio per simulation minute and stores 60; waiting alone does not credit radio. Bosses grant 80 extra radio. The base player limit is 600. The Atlas radio upgrade increases capacity and budget. Radio pays for support orders, which also have cooldowns.
Solo: north only or both sides
Choose your solo defence sides before starting. North only routes future spawns through northern entries. Enemy count, HP and rewards stay the same. With two connected players both sides are enabled. If only one remains connected, the chosen solo rule applies to enemies that have not spawned yet. Living enemies are never moved.
Text chat, emojis and voice chat
In co-op, press Enter or click the room chat. Use ☺ to insert an emoji at the cursor and send it with your message. On desktop, chat stays visible with a transparent background and can be dragged by its title; on mobile, you can collapse it.
Each participant clicks “Join voice” and grants microphone permission to speak. “Mute” switches off your microphone; the volume slider controls the other voices. The participant list shows who joined, is muted or connected. If your browser blocks playback, click “Enable audio playback”.
Voice is optional and limited to participants in the same room. The microphone stops when you leave voice, leave the room or lose the game-server connection. After reconnecting, join voice again. There is no recording. Use the HTTPS game address and preferably headphones. If voices do not connect despite microphone permission, the operator may need to configure a TURN server.