What are the odds of successfully invading a planet with 3706 combined attack/defense if i have 4920 attack with buffs and 175 invasion ability. also, is invasion ability buffed by attack buffs?

yes your inv stats are calculated by your atk so an atk buff would give you a greater shot or higher percentage as for the calculation not sure the exact way it is calculated.

Well, that means i now have 4920 attack and 232 invasion attack. also, take note the planets stats are after i throw debuffs on them. it would be nice if dan could supply us a formula for invasion success calculations.

I've noticed that if your attack is above the planet's attack and defense it's 1-(planet stats)/(your stats), possible a few percent higher after a recent change. I think yours is high enough above the planet's that that equation is about right.

that formula makes no sense. the answer to 1-5152/3706 = 0.3 (1dp)

It does make sense; you misread it and mixed up your stats and the planet's stats.

EDIT: Actually, it looks like you calculated it right and just copied it down wrong. That answer is correct, .3, 30% chance.

oh lol. sorry, i thought you meant percentage not decimal chance. you should have said X100. wait, 30% chance? that can't be right. i thought that it was 50% when it's equal to attack/defence? In fact it's not. i messed planet stats and my stats around the wrong way. but anyway. you should change your formula to (planet stats/Your attack)*100

I will not change my formula; I said that was the chance, not the percent chance.

On the point though, I've heard what you heard as well, but it's not true. Last time I had a tough invasion my attack was 50% higher than the planets stats, and I had a 39% chance to successfully invade (which suggest a +6% or something).

I always thought it was 50% when attack equaled planet defence/attack. I wish Dan would inform us.

I believe the formula is wrong. i invaded successfully after tripping an alarm sentry (+600 defense)

So?

so your theory has about a 70% chance of being wrong.

there is no way to predict invasion success
all you can do is load your dice before throwing them...they can still come up bust

I don't know what you're talking about. I did say that equation only works if your attack is somewhat higher, because as your attack approaches planet attack it changes so that you'll always have some chance. I think that's somewhere down near 10% or so, though I can't say for certain. Other than that, I still believe it is correct, you just don't understand chance.

Here's how my planet conquest went - note it was undefended

****
Defense 70
Attack 0
Cloak 40
Pop 260

Use Ion Storm Charge -15% planet defense for one hour

Grid Console
A temporary firmware package, increasing your ship defenses by 20% for 2 hours (probably didn't need this)

Crimson Obelisk
Magnifies the intensity of weapon systems, temporarily increasing attack by 10%

Attack 157
Defense 173
Scan 21
Cloak 102

You (Winner) ****
Attack: 157 / Defense: 173 Attack: 0 / Defense: 64
You gain 8 [ Shields Left: 113 ] -12

25 further rounds of damage to Pop between 7 - 13 per round

Energy used 26 x 5 = 150

You have successfully conquered ****!!
You gain 1 Green Badge

****
Very Large Terra Planet
Rare
Controlled by You

Resources
Colony
Structures
Actions
Effects (1)

Resource Availability Production
Mining Very Rich 13.5 units/hr
Artifact 3x Mega Rich 30 units/hr
Research Extremely Abundant 10.5 units/hr 11 / 260
Population 0

New Colony, Recently Conquered, Controller: Tina Tuggle (Rank 16)
Planet Guards Legion Bonus Total
Defenses: 64 0 0% 64
Attack: 0 0 0% 0
Cloak: 40 0 0% 40

57 / 57
Space Used
Name Effect Options
Surface Mine Mining: 1
Surface Scanner Artifact: 1
Research Station Research: 1
Surface Bunkers Defense: 25
Surface Bunkers Defense: 25
Surface Mine Mining: 1
Surface Scanner Artifact: 1
Surface Mine Mining: 1
Processing Core Mining: 1, Artifact: 1
Relay Tower Research: 1, Artifact: 1
Refining Lab Mining: 1, Research: 1
Surface Scanner Artifact: 1
Research Station Research: 1
Research Station Research: 1
Surface Mine Mining: 1
Surface Scanner Artifact: 1
Space Elevator Artifact: 1, Population: 50
Surface Bunkers Defense: 25
Habitation Modules Population: 20
Spy Uplink Research: 1, Cloak: 40
Space Elevator Artifact: 1, Population: 50

Action Options
Scan Sharing This planet's location was shared to you.
Expires in: ?
Artifacts
Abandon Confirm?


Use Planet flux to remove from player scanned list

There is, i have invaded nearly 30 planets. Failed alot too, from my experience, here is what i can tell

If your Attack, Including artifacts buffs, Must Be Double the Planets Total Defence and Attack combined, Which includes Planet artifact Buffs To score a 90% invasion chance success. If your attack and planet total defence are equal, then you have 50% chance of successful invasion. Any lower, don't risk it, i only invade planets when their defence are half my Max attack

If you want to increase your Odds of invasion, Activate all you attack boosters, Crystals, Amplifiers, Obelisks, Build all your 8 of your best cannons. Drop Ion storm Charges, Orbital Mass Disruptors, Warp the guards, and then proceed with attacking the planet. Engineered Virus aren't particularly useful and Do not contribute to your invasion success.

Crimson Cluster Missiles help alot, they is a limited number of them though, Paradox Generators can be used as Back up if you happen to fail.

Quantum Bio-Vaporisers may seem awesome. But they are surprisingly useless, pointless dropping quantum bombs on a planet with 30k Def and then you fail invasion with 3% chance of success...

c/w you have just proved my point
all the buffs and superiority in attack etc will only give you a 90% success chance...or a 10% fail chance in other words
thats what i meant by loading your dice...and the bust comes if you fall into that tenth percentile.

I recently managed to invade a mega colossal 1x mega rich aquatic planet, with alot of luck.

The planet
600 attack
450 defence
0 cloak

Me
549 attack
Stryll Pathogen (+300 invasion attack, drop from Sketh, Stryll Predator)
Ancient Crystal Foci
Crimson Obelisk

Got it down... virused it so that I had the energy to actually invade :S

10mins later I attempted to take it.
I succeeded.

549
+5%
576
+20%
692
+300
992.

Planet: 1050 invasion defence (attack+defence+i.defence)
Wow I was lucky looking back at it.

This is the closest to a plain English explanation I've ever read on this subject. Thanks for the info.

That's all the obvious stuff, there's a thread with the actual equation. Essentially, (invasion attack) / (3 * invasion defense).