Debris fields are where fleets go to die — and where smart players go to get rich. Every ship destroyed in OGame leaves behind a fraction of its construction cost as metal and crystal floating in orbit, waiting to be scooped up by whoever gets there first. Understanding the exact drop percentages, who owns the harvest right, and how to win the recycler race is the difference between being a spectator to violence and being its primary economic beneficiary. On OGames, with debris rates ranging from 43% up to 80% depending on universe, this knowledge is worth more than almost any technology you can research.
Where Dead Fleets Go
Every ship and defense structure in OGame is built from metal, crystal, and sometimes deuterium. When they are destroyed in combat, a portion of those resources does not simply vanish — it coalesces into a debris field at the coordinates of the battle. This field appears immediately after the combat report resolves and stays at that position in space indefinitely, slowly accumulating if more battles happen at the same location.
The debris field sits at the planet or moon coordinates where the fight took place. It is accessible to any player who sends a Recycler fleet to those coordinates using the "Harvest" mission type. Unlike a transport or attack, the harvest mission does not require any hostile action — you are simply scooping up floating resources that already exist at a fixed point in space.
A few technical points that catch new players off guard:
- Debris from defense structures drops separately. Ships that die defending a planet contribute to the same debris field as attacking ships, but the percentage that drops from defenses is governed by a different rate than the ship rate — more on this in the next section.
- The debris field is coordinate-specific. A battle at Galaxy 1, System 5, Position 7 produces debris at that exact address. If you send your recyclers to System 5, Position 8 by accident, you harvest nothing.
- Multiple harvests are possible. If the debris field contains more resources than your recycler fleet can carry in one pass, they collect up to their cargo capacity and the remainder stays in the field. You can send waves of recyclers until the field is empty.
- Deuterium is never in debris. No matter how much deuterium a destroyed ship cost to build, none of it appears in the debris field. You harvest only metal and crystal.
This last point has real strategic weight. Deuterium is the fuel of the game — every fleet movement burns it, every research level costs more of it. A massive debris field can restore a player's metal and crystal reserves overnight but does nothing for their fuel situation. Winners of big battles still have to mine or trade for the deuterium needed to exploit their newfound advantage.
Debris Math: What Actually Drops
The debris drop percentage is a server configuration value — two numbers set by the universe owner: one for ships, one for defenses. In the original OGame formula, each ship contributes its structural integrity cost (metal + crystal of its hull points) multiplied by the debris rate to the field. The exact formula that matters to you as a player is straightforward:
Debris from ships = (ship metal cost + ship crystal cost) × ship debris rate
Debris from defenses = (defense metal cost + defense crystal cost) × defense debris rate
Consider a Battleship, which costs 45,000 metal and 15,000 crystal. At a 50% debris rate, one destroyed Battleship contributes 22,500 metal and 7,500 crystal to the field. Scale that to a fleet of ten thousand Battleships and you are looking at 225 million metal and 75 million crystal — before adding anything else that died in the same fight.
Defense structures historically dropped at a lower rate than ships, and in many vanilla OGame versions, defenses did not drop at all. The logic was that defenses are meant to be a permanent investment — if they dropped debris at the same rate as ships, the attacker could literally profit from smashing your defenses repeatedly. Server configurations vary: some give defenses 0% debris, some give a reduced rate, and some match the ship rate.
The most important variable in any debris calculation is the recycler cargo capacity. A standard Recycler carries 20,000 units. A Large Cargo carries 25,000. To harvest a field of 10 billion resources you need enormous recycler fleets or multiple waves, and getting those recyclers there before anyone else is its own strategic problem — which leads us to the harvest race.
One more mechanic worth knowing: when an attacker wins, they typically get the first chance to harvest because they control the space around the planet. But the defender and any third party can also send recyclers. Nothing in the base game mechanics prevents a neutral third player from harvesting a field that two enemies created. Etiquette, threats, and raw speed determine who actually gets it.
OGames Rates: 43% to 80% — Why It Changes Everything
OGames runs three universes simultaneously, each with dramatically different debris rates. This is not a minor tuning difference — it fundamentally changes how you should think about fleet construction, combat aggression, and economic recovery.
| Universe | Ship Debris Rate | Defense Debris Rate | Moon Chance (max) |
|---|---|---|---|
| Andromeda | 43% | 17% | 20% |
| Nebula | 55% | 22% | 30% |
| Proxima | 80% | 32% | 40% |
At 43% (Andromeda), debris is a nice bonus — meaningful on large battles, but combat is still primarily about plundering resources from the target planet. The attacker needs to win convincingly enough that their surviving fleet can carry the loot and still make profit after factoring in deuterium cost and ship losses.
At 55% (Nebula), the math tilts. Battles that would have been marginal in Andromeda become clearly profitable. A defender who fights back hard creates more debris — and a defender who loses everything at 55% loses less effectively than they think, because over half of what died can be recovered by whoever gets to the coordinates fastest.
At 80% (Proxima), debris fields become the primary economy of fleet combat. A battle that destroys one billion resources worth of ships generates 800 million in the field. Players who lose their entire fleet at Proxima can recover a huge portion of it — if they have recyclers positioned and ready, or if a friendly ally harvests and sends the resources back. Aggressive fighting is economically viable in ways that are simply not possible at lower rates, because the destruction itself produces wealth at nearly one-to-one. This is why Proxima also provides 20,000 Dark Matter at signup and 50,000 weekly: the pace of everything is faster, the economy is wilder, and you need the boosts to keep up.
The defense debris rates matter more than people initially realize. At 32% in Proxima, a turtle who has spent weeks building Heavy Plasma Turrets, Gauss Cannons, and Rocket Launchers is handing over roughly a third of that investment in every failed attack. This pressures pure turtles to maintain recycler fleets of their own — to harvest their own debris before the attacker circles back — which is an interesting strategic wrinkle unique to high debris-rate universes.
The Harvest Race
A debris field has no owner. The moment combat resolves, that field is fair game for any player who can reach it. In a speed universe where fleet speeds are multiplied, the harvest race condenses into minutes rather than hours — which is exactly the kind of high-stakes timing puzzle that makes speed servers compelling. If you want a full breakdown of how fleet saves and timing work in this environment, the fleet save guide is essential reading alongside this one.
Winning the harvest race requires preparation on multiple levels:
- Pre-positioned recyclers. The attacker should launch recyclers in the same wave as the attack fleet, timed to arrive shortly after the attack lands. This is called a "follow-up" and is standard practice for any serious operation. Recyclers are significantly slower than combat ships, so they need a head start or a separate, staggered launch.
- Enough cargo capacity. Calculate the maximum possible debris before you launch. Use the combat simulator to estimate losses on both sides at the attacker's tech level, multiply by the server's debris rate, and bring at least 20% more recycler capacity than you think you need. Underestimating is costly.
- Alliance coordination. In ACS-capable universes — and OGames supports full ACS and alliance play — a friendly player closer to the target can launch recyclers after you share combat report information. Speed matters more than who officially launched the attack.
- Scout the field immediately. After combat resolves, send a probe to the coordinates. The espionage report will show the current size of the debris field. This gives you precise recycler needs and alerts you if someone else is already harvesting.
On the defender's side, the harvest race creates a bizarre but effective defensive strategy: position recyclers on a moon nearby, set them up for immediate departure, and the moment you see an incoming attack you cannot survive, begin calculating how fast your recyclers can reach your own planet's debris after the battle. You cannot save your fleet if it is already deployed and the attack times out your recall window, but you can sometimes recover the majority of what you lose by harvesting yourself before the attacker gets there.
This defensive recycling is especially powerful in Proxima, where the 80% rate means your losses partially return to you regardless of who wins the battle — as long as you act within minutes of the combat report appearing.
Debris Etiquette and the Politics of Harvest Rights
OGame has never had formal rules about who "deserves" a debris field beyond what the game mechanics enforce (none — anyone can harvest). What has emerged instead is an elaborate social layer of norms, alliance agreements, and mutual threat systems that govern debris harvesting in active communities.
The most widely observed convention is simple: the attacker gets the debris. If you did the work of hunting, timing, and launching the operation, the field is yours by community consensus. Harvesting a field that someone else created through active combat is treated as one of the more disrespectful acts in OGame culture — the equivalent of stealing a tip from a waiter's table.
Where it gets complicated:
- Ninja defense debris. When an attacker gets destroyed by a defender's fleet or the player ninjas the attack with a returning fleet, who gets that debris? Technically the defender created it by fighting. Most players agree the defender owns this field. But if the debris is large and the defender has no recyclers ready, the attacker's allies might scoop it in the chaos — which causes genuine drama.
- Alliance battle debris. In a major ACS operation involving a dozen players, who gets the field? Typically the organizer, or a pre-agreed split. Alliances that do not settle this before a major op have collapsed over the disagreement afterward.
- Expedition debris. Expeditions can return destroyed, generating a debris field at the expedition coordinates. This is your own debris by any reasonable standard, but reaching the edge of the galaxy with recyclers in time is its own challenge.
- Ninja bait and debris theft. A classic griefing tactic is to watch an attacker's recyclers en route to their own field, then launch faster recyclers to arrive just before them. Technically legal, universally despised, occasionally used as a retaliatory measure in ongoing wars.
Alliance diplomacy around debris is one of the most underrated aspects of OGame's social complexity. Alliances that have clear internal rules — who harvests, how fields are split on shared operations, how reparations work when a member loses a fleet — function more cohesively than those who treat every field as first-come-first-served chaos.
Debris-Driven Strategies
Once you understand the mechanics, an entirely different strategic layer opens up. The most effective players in high-debris universes do not just fight to plunder planets — they fight to generate and control debris fields as primary income sources.
The combat mechanics deep-dive covers the full battle resolution system, but here are the debris-specific strategies worth building around:
The Recycler Investor — Build recycler capacity far beyond what you need for your own operations. Position large recycler fleets on moons throughout your active galaxy. When anyone nearby fights a big battle, you can be on the field within minutes. Some players generate meaningful income without ever being the primary aggressor, simply by being the fastest harvester in the neighborhood.
The Mutual Destruction Farm — At 80% debris rates (Proxima), it is mathematically possible to arrange battles where both sides lose ships and both sides harvest debris, resulting in a net positive for total resource generation compared to sitting idle. This is rarely done openly, but alliance members sometimes coordinate "training battles" that are really debris generation sessions.
The Moon Factory — Every large debris field at a planet raises the moon creation chance for that round (up to the server cap). OGames caps this at 20% for Andromeda, 30% for Nebula, and 40% for Proxima. Players who need a moon at a specific location will sometimes deliberately sacrifice a fleet — or pay someone else to destroy one — to trigger a moon creation attempt. The debris field from the sacrifice is a secondary benefit. See the moon shot guide for the full mechanics of this approach.
The Expedition Recycler Fleet — Expeditions on OGames are a core resource mechanic. When an expedition fleet is destroyed by dark matter, aliens, or pirates, it generates debris at the expedition point. Running a permanent expedition operation alongside a dedicated recycler fleet assigned to sweep those coordinates creates a self-sustaining resource loop that scales with your expedition fleet size.
The Debris Race Trap — Advanced players sometimes create artificial urgency around a debris field to lure enemy recyclers out of fleet save. If a large field appears and you announce it in alliance chat loudly enough, enemy spies relay the information and sometimes trigger a panicked harvest attempt — exposing recycler fleets that can themselves be attacked in transit. This is the kind of metagame depth that keeps OGame interesting for veteran players years after they learn the basic mechanics.
For players interested in maximizing resource income beyond combat, the farming inactive players guide pairs naturally with debris strategy — inactive farms generate predictable, low-risk income that funds the recycler fleets you need to capitalize on the unpredictable high-value fields created by active combat.
FAQ
Can I harvest a debris field on a planet I own?
Yes. If someone attacks your planet and a debris field forms, you can send your own recyclers to harvest it. In fact, harvesting your own debris field before the attacker's recyclers arrive is one of the most effective ways to minimize losses from an attack you could not prevent. Position recyclers on a nearby moon for exactly this purpose.
What happens to the debris field if nobody harvests it?
It stays there indefinitely. Debris fields do not decay or disappear on their own in OGame. They will remain at those coordinates until a recycler fleet harvests them. This means a massive battle can create a field that sits for days or weeks, slowly tempting anyone passing through the galaxy. Some players make a habit of scanning debris fields across their galaxy with probe fleets looking for overlooked resources.
Do Recyclers consume deuterium to harvest debris?
Yes. Like all fleet missions, a harvest mission burns deuterium proportional to the distance traveled and the number of ships sent. This is an important cost to factor into your profitability calculations — sending a massive recycler fleet across many systems to reach a small debris field can cost more in deuterium than the field is worth. Always calculate the deuterium round-trip cost before launching a harvest mission.
Why is the defense debris rate lower than the ship debris rate?
Defense structures are intended as permanent investments, not consumables. If they dropped at the same rate as ships, attackers could profit from destroying defenses repeatedly with minimal risk — just bomb a turtle, harvest the defense debris, repeat. The lower defense rate keeps turtling viable as a strategy while still creating some economic consequence from defense losses. On OGames, even at 17–32% for defenses, a heavily fortified planet generates meaningful debris from a failed attack.
Can alliance members harvest my debris field during an ACS attack?
Mechanically, any player can send recyclers to any coordinates. There is no game-enforced restriction on who can harvest a field. Alliance members should coordinate beforehand — agree on who handles recycling for a joint operation, or designate a specific recycler team to follow the attack fleet. Relying on informal understanding without explicit agreement is how post-battle arguments start. Clear pre-op communication about debris rights is a mark of a well-organized alliance.
Debris fields are one of OGame's most elegant mechanics: they turn every act of destruction into a resource generation event, create competitive races that require preparation and speed, and layer an entire social system of harvesting rights on top of the base game rules. In OGames' high-rate universes — especially Proxima at 80% — debris income can rival production, making recycler management as important as fleet construction. Join OGames and choose your universe: whether you prefer Andromeda's measured 43% rate or Proxima's explosive 80%, the debris fields are waiting — and so is everyone else who wants to reach them first.