Yes you can cause a revolt, but if that happens, one of you must colonize the planet. For a revolt signifies that it loses everything, just becomes another planet.

They won't switch sides, you just overthrow them then colonize them.

Go send a ship over to spy on them, see what their allegiance is, once it gets under a certain point, I think it's ten percent, it says that the planet will be overthrown soon.

Cya

In Beta planets would flip over to your side, now they just go neutral. You cause it by having the cultural techs and nearby broadcast centers (or communications temple, whatever). You can view the culture spread by the color of your empire spreading down the jump lanes. With Advent they get some useful abilities including the ability to see enemy culture spread anywhere in the galaxy (not relevant in your example) but to also get information on any planet under their culture effects.

If you target a planet and look at the 3 icons just to the left of the planet (bottom of the screen) the middle button show the current culture / allegiance. You can hover the mouse over that and see what the current allegiance is and how much it's changing per second.

Friendly capital ships (as well as culture centers) repel outside influence it is entirely possible your opponent could have enough caps/center to remain stable.

In beta it was too easy to do cultural attacks, it might be a little too difficult now. You don't want to make culture too easy however, it just encouranges people to turtle and build broadcast centers, you want it to be a viable tactic but not so easy it's "cheesy".

Tell me about it.

I played a fully upgraded Advent. I had beaten the Vasari back into just one world. I controlled all the other planets.

I had 4 broadcast centers near their last world. I also had the Deliverance Engine. I waited for a long while and nothing. No world flipping. I sent a scout to their system and I found their alliegence was 70%.

So with a fully upgraded Advent, plus 4 broadcasts and the Deliverence Engine, if all that can't flip a beaten enemy, I guess nothing can.

You should've just used all that resource to make a bigger fleet and then rush them while your Dev. Engine shoots the blast to increase your damage output, although, I'm pretty sure that's what you did in the end.

I haven't even noticed how much culture is used in the game. I knew it was like an underlying power, but this is very interesting. I guess I'm going to stick to Vasari for a while. I want that Pop Idol achievement. =p

So how can you make the culture war work? Any suggestions?

I need chi