The purpose of OGame defence is to make worthwhile attacks harder to find. There is no universal ratio that makes a planet invulnerable. The right design depends on what you leave behind, likely attacking fleets and your universe’s debris settings.
This defence guide uses a planning method: define the exposure, simulate realistic opponents and compare the next defensive investment with cheaper ways to reduce the incentive to attack.
Decide what the defence is protecting
Covering several hours of production is different from trying to keep a valuable fleet parked overnight. Write down the resources and units that normally remain on the planet during your absence. That is the scenario your defence must address.
If the exposed value grows after several mine upgrades, reassess the design. A defence suitable for an earlier production level may no longer discourage the same attackers.
Profit denial is more useful than a ship-count target
An attacker may accept losses if the expected return is large enough. Increasing defence indefinitely can therefore be less efficient than reducing the resources or ships left available.
For a purely hypothetical example, an operation offering 900,000 equivalent resources against 500,000 in costs still leaves an incentive. The actual calculation needs separate resource values, fuel, recovery and uncertainty; the example only illustrates why the loot behind a bunker matters.
Use mixed roles rather than one impressive statistic
Cheap structures provide numbers, while heavier structures have different cost, damage and durability profiles. Building only the cheapest unit or only the unit with the highest attack does not automatically create an efficient combination.
Historical Origin defence tutorials explain the idea of combining structures. Verify current unit statistics and rapid-fire relationships before using a specific ratio from an old guide.
How to test a defence
- Enter all stationed units and defences.
- Use your actual technologies and supported bonuses.
- Test several plausible attacking compositions.
- Set the correct ship and defence debris percentages.
- Compare losses, fuel, loot and recoverable debris.
- Change one part of the design and measure its effect.
A test against one invented enemy is not enough to establish safety. Include different force sizes and compositions, and check what happens if your report or assumptions are incomplete.
Defence to debris needs special attention
Where destroyed defence contributes to debris, the bunker itself can alter the attacker’s potential reward. Do not copy a design from a universe with different settings and expect the same economics.
Check the server information and make sure the simulator uses those values. Also distinguish generated debris from resources you will actually recover.
Reconstruction is not prevention
A reconstruction mechanism can reduce permanent losses after combat, but it does not prevent the battle or guarantee that resources remain untouched. Review missile mechanics and applicable reconstruction conditions separately.
Do not treat an expected reconstruction percentage as a guarantee that an individual structure will survive a particular event.
When to stop adding defence
Compare the next block of structures with improvements in transport capacity, resource collection and economic development. If the defence already discourages ordinary attacks for the value you leave, logistics may solve the next problem more cheaply.
This is a decision method rather than a fixed recommendation. Nearby fleets, repeated attention and changes in production can justify a different balance.
Peaceful play still requires fleet planning
Choosing an economic play style does not stop other players from attacking. Defence and fleetsaving address different exposures. Learn how mission visibility and return timing affect a movement rather than assuming any flight keeps a fleet safe.
Use a combat simulator with documented limits and read the historical Origin fleetsaving guide for the underlying risks. Your aim is a manageable account with fewer attractive opportunities, not a promise of absolute protection.
Related OGame guides
- OGame Download Guide: Android, iPhone, iPad and PC Browser Access
- OGame Forum, Wiki and Support: Where to Find Reliable Answers
- OGame Servers and Universes: How to Choose the Right Settings
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