Moon

A moon can exist on any planet in the universe. They are created by chance if a large enough battle occurs at a planet. Moons can also be destroyed by Deathstars. A moon is extremely important, foremost in allowing a safe fleetsave.

In addition, moons are the only locations where certain facilities can be built. These include the Sensor Phalanx and Jump Gate. Due to the importance of having a moon, many players engage in moonshots in order to try to create one artificially.

Once created a moon functions sort of like an auxiliary planet. It can send and receive fleets, hold resources, be attacked, and so forth. The travel distance between a moon and planet it orbits is naturally very short.

Facilities[]

The following buildings can be constructed on a moon:

A moon starts with only 1 field. The Lunar Base is used to add more fields to a moon. Each level adds three field but of course consumes one.

You cannot build resource mines, Research Labs, Nanite Factories, Terraformers, or Missile Silos on a moon.

Notes[]

↑ ^1.0 ^1.1 ^1.2 The storage is useful only for scrap merchant, and that is hardly enough reason to build it and waste slots.

Defense[]

As long as the required Shipyard level is constructed, any Defenses can be built on a moon. Just like on a Planet, constructed defenses do not use up fields. IPMs can be used to destroy defenses on a moon. While it is not possible to build ABMs on the moon the ones from the planet will defend the moon if attacked by IPMs. It's important to note ABMs are the only defense which this applies to and the other defenses on the planet will not help repell an attack on the moon.

Obtaining[]

Having a moon is so desirable for success in OGame that many players team up to organize a series of moonshots until they get one. Because the largest default chance any single attack can have at forming a moon is 20%, it can often take many moonshots in order for a moon to form on the desired planet.

Probability of moon formation from ship debris
Ship	1%	2%	3%	4%	5%	6%	7%	8%	9%	10%	11%	12%	13%	14%	15%	16%	17%	18%	19%	20%
Small Cargo Ship	84	167	250	334	417	500	584	667	750	834	917	1,000	1,084	1,167	1,250	1,334	1,417	1,500	1,584	1,667
Large Cargo Ship	28	56	84	112	139	167	195	223	250	278	306	334	362	389	417	445	473	500	528	556
Light Fighter	84	166	250	334	417	500	584	667	750	834	917	1,000	1,084	1,167	1,250	1,337	1,417	1,500	1,584	1,667
Heavy Fighter	34	67	100	134	167	200	234	267	300	334	367	400	434	467	500	534	567	600	634	667
Cruiser	13	25	37	50	62	75	87	99	112	124	136	149	161	173	186	198	210	223	235	247
Battleship	6	12	17	23	28	34	39	45	50	56	62	67	73	78	84	89	95	100	106	112
Colony Ship	12	23	34	45	56	67	78	89	100	112	123	134	145	156	167	178	189	200	212	223
Recycler	21	42	63	84	105	126	146	167	188	209	230	250	271	292	313	334	355	375	396	417
Espionage Probe	334	667	1,000	1,334	1,667	2,000	2,334	2,667	3,000	3,334	3,667	4,000	4,334	4,667	5,000	5,334	5,667	6,000	6,334	6,667
Bomber	5	9	14	18	23	27	32	36	40	45	49	54	58	63	67	72	76	80	85	89
Solar Satellite	167	334	500	667	834	1,000	1,167	1,334	1,500	1,667	1,834	2,000	2,167	2,334	2,500	2,667	2,834	3,000	3,167	3,334
Destroyer	4	7	10	13	16	19	22	25	28	31	34	37	40	43	46	49	52	55	58	61
Death Star	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1
Battlecruiser	5	10	15	20	24	29	34	39	43	48	53	58	62	67	72	77	81	86	91	96

Destroying[]

A moon can be destroyed by a fleet of Deathstars. If there is any fleet or defense, the attacker must win the battle first before the moon destruction chance begins. A draw or loss by the attacker will send any surviving Deathstars back with no moon destruction. Regardless of if the moon is destroyed or not, there is a chance that the moon will destroy the Deathstars. The formulae are provided below. It is important to note that when a Moon, the Deathstars, or both are destroyed there is no debris field created in the moon destruction mission.

Moon Destruction Results[]

There are 4 possible outcomes for a moon destruction mission:

Moon survives, Fleet survives
Moon survives, Fleet is destroyed
Moon is destroyed, Fleet is destroyed
Moon is destroyed, Fleet survives

Fleets returning to the destroyed moon will be rerouted to the planet. This will mean the fleet would be visible to a phalanx.

Formulae[]

Key:
S = Size of the moon (Km)
D = number of Deathstars

Chance to destroy moon (in percentage): $( 100-\sqrt{S} )\times\sqrt{D} )$

Chance the deathstar is destroyed (in percentage)^{[note2 1]}: $\frac{\sqrt{S}}{2}$ ^{[note2 2]}

Notes[]

↑ this is a single roll for the entire fleet.
↑ Before deathstars destroy a moon, they have to fight with fleets and defences on the moon. There is almost always a greater chance that the deathstar(s) will be destroyed than the moon - however, take for example a size 8944 moon being attacked by 100 deathstars. There is a 54.27% chance that the moon will be destroyed yet a 47.29% chance the deathstars will be destroyed. Additionally, any number of deathstars greater than 339 causes a claimed chance greater than 100% of moon destruction.

Images[]

Moon 1 from Planet Overview	Moon 1 Overview	Moon 1 Buildings
Moon 2 from Planet Overview	Moon 2 Overview	Moon 2 Buildings
Moon 3 from Planet Overview	Moon 3 Overview	Moon Buildings 3
Moon 4 from Planet Overview	Moon 4 Overview	Moon Buildings 4
Moon 5 from Planet Overview	Moon 5 Overview	Moon Buildings 5