XCOM: Enemy Unknown is a turn based strategy game developed by Firaxis for PC, XBOX 360, Playstation 3, OS X, and iOS.

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24
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What determines if a soldier is gifted with psionic powers?

The game mentions a soldier's will influencing whether they have a gift or not. Since you can only test a soldier once, does that mean promoting a soldier a couple of times before testing might ...
49
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2answers
65k views

What does the full research tree look like?

I find myself constantly wishing I had some idea what the research tree looked like. For example, if I want to unlock plasma weapons, do I have to go down the laser weapon path first to unlock it, or ...
19
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3answers
5k views

How does enemy progression work?

As I play the game, I notice that eventually tougher enemies show up. From what I've read, it sounds like this is based on elapsed time rather than "research checkpoints", but I haven't seen any ...
15
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2answers
3k views

How can I kill an enemy under mind control?

I was in a mission and had only one soldier with moves left and a berserker. Since I couldn't kill it with just one shot I mind controlled it. Then on the next 4 turns I got stuck with it, waiting for ...
9
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3answers
10k views

What are the proximity bonuses for adjacent buildings and when do they apply?

The game makes it clear that labs and workshops get a bonus when built next to buildings of the same type. I've also seen it written online that Satellite Uplinks get a bonus but I can't see anywhere ...
47
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2answers
42k views

What alien bits should I sell?

I've got a considerable amount of alien detritus lying around my base: Some items, like the damaged UFO flight computer, are marked as useless and intended for sale without consequence. However, ...
16
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3answers
3k views

What do distance units mean?

In XCOM configuration files, distances are expressed in some obscure units, that do not translate to grid cells easily. Example values: unit vision radius: 27 most weapons range: 27 sniper rifle ...
8
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1answer
6k views

How do I unlock the new “Second Wave” options?

Second Wave is now a real thing, released as free DLC. However, I've noticed that not all of the options are available at the beginning. What are all the options available in Second Wave, and how do ...
17
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3answers
25k views

What are the differences between normal and classic difficulties?

I can't seem to find a good list of info of all the changes that classic mode offers over normal other than that 'its much harder'. Does any of the enemy AI improve in classic mode? Do enemies have ...
12
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1answer
10k views

How do stats affect to-hit percentages?

My soldiers have an Aim stat and a Defense stat. Sometimes, I've got things like smoke grenades which claim to give you +20 defense and the like. What does this actually mean in terms of chance to ...
12
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3answers
10k views

Can you reject Slingshot DLC mission first month and choose it next month?

Slingshot DLC first mission is a bit hard for first month on Classic. So on the screen with options Slingshot/Normal mission(random) I said normal expecting this question to appear next month ...
2
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2answers
2k views

What's the maximum will a soldier can have per rank? How much willpower does an operative gain per rank?

I'm trying to make a squad of superhumans to fight the alien scum. To that end I would like to maximize my soldiers' will by reloading at the end of the mission until I'm satisfied with the result. ...
20
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2answers
19k views

Capturing multiple of the same alien

Is there any benefit to capturing multiples of the same species? For example, say I've captured a Sectoid and researched the related interrogation, and now I've captured another - does anything ...
17
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4answers
8k views

What is the benefit of launching a satellite “a few days before the monthly report”

I've seen this hint in the game as well as on this site and I've been wondering if there is any specific advantage to launching satellites closer to the monthly report rather than any time during that ...
15
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3answers
53k views

Where are the savegames located in x-com enemy unknown?

I have a lot of savegames and I'd like to clean them up. Ingame you can only delete them one by one. There is a folder "Saves" in the steamapps folder (I have the steam game) but there are no files in ...
9
votes
4answers
3k views

Can I increase the speed of combat?

XCOM Enemy Unknown is a beautiful game, but you can only see every 5 second animation so many times before it becomes repetitive and self-indulgent. Is there a way to make the animations go faster or ...
8
votes
2answers
4k views

What affects manufacturing costs?

I've been noticing that as I progress through my game on Classic Ironman, the cost for me to manufacture satellites keeps going down. It was §100 when I started the game, at another point it was §78, ...
7
votes
4answers
2k views

Can you encounter lower tier aliens in the late game?

I'm on my first XCOM: Enemy Unknown playthrough on Normal and am just about to enter the end game. I've finished the Gollop Chamber and got one of my soldiers ready to use it. However... I'm kind of ...
7
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3answers
5k views

What attribute values should I look for in my X-Com Troopers?

Playing X-Com Enemy Unknown, and I have a Heavy with a 30 Will who panics at the drop of a hat, so I know I should probably trash him. Obviously I want troops with high attribute value, but what ...
7
votes
2answers
5k views

Will the Battleship reappear if you miss it once?

I want to farm the Blaster Launcher before I finish the game. The Battleship appeared once when I was in the process of rearming the Firestorm I had over that area and my 2 regular interceptors were ...
7
votes
1answer
6k views

Is there a way to speed up time just a little bit?

Let's say a large UFO is detected but I only have poorly equipped interceptors in the area. I have a Firestorm with plasma cannons in transfer, but it's going to take another few hours to get to that ...
7
votes
1answer
8k views

How do I play the Interceptor/UFO minigame?

I heard that the Interceptor/UFO sequence is a minigame yet there was no tutorial. Is it a minigame? What are the controls and rules...?!
7
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1answer
3k views

Do you get equipment back from dead soldiers?

Equipment is expensive. When one of my soldiers meets his inevitable end, will I get back the equipment that he was using?
6
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2answers
1k views

Are there any advantages to stunning an alien besides being able to interrogate it?

Aside from being able to interrogate an alien in the Alien Containment chamber, are there any particular advantages to risk trying to stun an alien instead of just killing it outright?
6
votes
1answer
2k views

What is this glowing red box?

So I'm running my guys around, and I see this glowing red box. It's doing that "closing" animation that the blue boxes do when you hover over one of your soldiers who is selectable. Any idea what's ...
5
votes
1answer
8k views

In what ways can a game of XCOM:EU end?

I've just seen a 'win' ending, which I suspect may be the ending, but thought I'd check what endings the game has just in case. Obviously you can lose by having eight or more countries leave the ...
5
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1answer
1k views

How do you flank an enemy?

What conditions must be met for an enemy to count as flanked? Is the same true for the enemy to flank you? Usually, it means that you have soldiers on either side of the enemy, but I've seen enemies ...
3
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2answers
322 views

Is there a way to recognize destructible environment in XCOM:Enemy Unknown?

Just so I know where not to hide my Heavy soldier behind.
42
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2answers
134k views

What is the perfect base layout?

Carefully planning your base's layout will lead to significant savings and bonuses. What goal should I have in mind when expanding my base? A perfect layout would be the one that wastes as little as ...
25
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5answers
5k views

How often should my troops use Overwatch?

When my troops are deployed on a mission, how often per turn should I use the Overwatch command? Are there particular classes that are better at this, or is each class equally useful in this regard? ...
31
votes
6answers
21k views

Is there any way to guide what class a rookie will become?

As far as I can tell, the game decides what class my guys will be promoted to upon receiving their first promotion. Are there any ways to influence this decision? Right now I'm stuck with more ...
28
votes
2answers
25k views

Can I get a country back into XCOM program?

I am playing XCOM - Enemy Unknown on Classic difficulty. In the first month, Australia quit the XCOM program. Due to the lack of money and fitting missions, I could not do too much to decrease the ...
18
votes
2answers
5k views

How long do crashed UFO's last?

I shot down a UFO, but a few of my "must have" soldiers are recovering from wounds. I would like to send them in 4 days, or 2 if I had to. Will the crash site disappear or otherwise go bad if I wait ...
15
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1answer
4k views

How does Line Of Sight work?

I'm a little confused by how the LOS system works. On a few occasions I've had my units be attacked when I thought they should be hidden from the enemy. I do not mean just in Full Cover since I ...
14
votes
3answers
4k views

What determines mission difficulty? [duplicate]

In XCOM: Enemy Unknown missions get more difficult as I advance in the game - at least in absolute terms. I was wondering if the mission difficulty does or does not depends on Elapsed time (ingame) ...
14
votes
1answer
3k views

Does the type of kill matter for promotion?

The main factor when it comes to promotions seems to be the number of aliens a soldier has killed. Does it matter what kind of alien is killed? Does a strong alien give more experience than a weak ...
14
votes
2answers
18k views

What are all of the priority missions needed to complete the game?

I just finished assaulting the alien base. I feel like I'm getting close to the end of the game, though, and I don't like it when the ending comes up abruptly with no warning. How many priority ...
13
votes
2answers
11k views

What are the hidden achievements in XCOM: Enemy Unknown?

Steam lists the game as having 60 achievements, but only ~38 actually show up in the achievement list to start with. What "secret" achievements are there, and what are the requirements to unlock ...
8
votes
1answer
2k views

Can you tell what enemies your soldiers would be able to see/fire on before moving?

When moving, XCOM provides a helpful blue line indicating what path your soldier will take. This is extremely helpful to see BEFORE you move, in situations like: When you're trying to sneak up on ...
2
votes
2answers
3k views

How is the number of engineers required to build facilities calculated?

I've noticed that the number of engineers required to build subsequent facilities (e.g. a second satellite uplink) is larger than the number required for the first facility. What factors determine the ...
32
votes
2answers
2k views

Is there a way to remove all items from squad members, or exchange items between squad members?

Is there a way to remove all items from squad members, or easily exchange items between squad members? It can be obnoxious to try and remember which items you've placed on which squad member, ...
23
votes
2answers
2k views

When is Rapid Fire better than regular fire?

Assault soldiers can pick a perk that lets them fire their weapon twice at a -15 penalty to aim. When is it better to use this ability and when to use regular fire instead?
18
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2answers
6k views

How much willpower do gravely wounded soliders lose?

How much willpower do gravely wounded soldiers lose? The text says they suffer a permanent reduction?
18
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2answers
1k views

Do medikits repair armor?

If your soldier takes more damage than he has bonus health from armor, his health will start depleting, resulting in him spending days in the infirmary. Does healing a soldier restore his armor's ...
16
votes
4answers
7k views

Are the hit percentages predetermined?

I was playing a Terror mission last night where after my unit would enter an area, a Cyber Disc and two Drones would come around the corner of a building. All four of my other units were in a position ...
14
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1answer
1k views

Will a sniper with squad sight on overwatch fire at targets allies can see?

If I have a sniper on overwatch, and that sniper has the Squad Sight skill, will the sniper take reaction shots at enemies seen by fellow soldiers?
12
votes
1answer
796 views

Do alien squads alert each other?

Let's say there are two different groups of aliens in close proximity, and one of the aliens of the first group is alerted ("awakened") to my presence. Will the other group also become alerted? In ...
11
votes
1answer
8k views

What do the icons next to a soldier's rank icon mean?

In combat, your selected soldier's rank is displayed as an icon at the bottom left corner of the screen. Sometimes a yellow star or a white cross will appear on top of it. What do these icons signify? ...
11
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2answers
6k views

Is there a benefit to multiple interceptors on one satellite?

Besides the obvious benefit of having an interceptor as a back up in case one is damaged or destroyed, is there a bonus to having two interceptors on one satellite to protect/shoot down ufos? I ...
10
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3answers
3k views

What's the point of the archangel armor's “flight” capability in Xcom?

I have a bunch of soldiers who are lucky enough to have gotten Archangel armor for christmas this year. But I can't for the life of me figure out how to use flight to my advantage. The game's quite ...