Forza Horizon 4

Forza Horizon 4

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Swamp Gas from a Weather Balloon

Swamp Gas from a Weather Balloon

Collect all Alien Debris in LEGO® Valley.

10

1.0%

How to unlock the Swamp Gas from a Weather Balloon achievement in Forza Horizon 4 - Definitive Guide

And for those that prefer a map method:

https://www.reddit.com/r/forza/comments/c0pfe5/lego_speed_ch...

only issue i've found is all the alien ones are the same marker, so if its not night AND raining, its hard to tell which from which.

i know i managed to have most of the boards and alien stuff get discovered as i was driving around getting the roads, even if my house wasnt upgraded enough to start collecting them, so i just needed the location of one or two of each.
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15 Jun 2019 11:29

18 Comments
Has anyone else had trouble with this not unlocking? I've picked up all 25 power cells, is there anything else I need to do?
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By I2xINCHxTONGUE on 16 Aug 2020 20:27
@I2xINCHxTONGUE - the guide does not specifically state this, but you need at least the alien plants as well, hence the "debris" in the description instead of "power cells". There are 25 of those as well, and they can only be found when it's raining.
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By TheIcemanCometh on 25 Aug 2020 10:25
@koolkong94 Just add the picture here whom cares who took the picture of a map.
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By etcher1981 on 28 Sep 2020 18:55
https://i.imgur.com/DtvDMio.jpeg

Here's that same map but I colored the cells green and the plants pink. And it's a direct link to just the image, no reddit or imgur pages you gotta click through.
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By koolkong94 on 06 Oct 2020 10:25
No way to force rain?
Early Horizon Release had same time / weather after race, but this did it. Waiting for rain .... tzzz tzzz.
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By Mondpixel on 07 Oct 2020 19:16
Same here...still waiting for rain
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By MAJICO70 on 27 Oct 2020 15:16
There was one way I found to get it to rain which worked for me in autumn. If you load up into lego valley and no clouds I fully quit the game xbox home button and quit loaded it back up till there was grey cloud coming over, drove about for 10 minutes then it started to rain collected some of the alien plants (as only appear when it rains) when it stopped raining I quit the game and repeated till the cloud was coming over, and in under an hour I had all 25
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By MarkusW86 on 02 Dec 2020 20:52
Just collected all debris, got the challenge, but the achievement didn't pop up. Any solutions?
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By Davroz on 02 Feb 2021 22:06
Presume the different seasons do also impact this LEGO DLC? Unfortunately I’ve started this DLC in Summer season where rain is minimal, so I’m realising I’ll have to set this achievement aside until Autumn now for the sake of more frequent rainfall.
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By ell635 on 12 Apr 2021 10:01
If you're playing in the winter season the alien plants can be found when it's snowing.
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By Varrick on 09 Oct 2021 20:43
I have 24 batteries, only the last one left. After the 24th I spent 21 nights in the game on purpose! There is not.
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By Ekzekutisto13 on 20 Nov 2021 15:03
A melhor opção e vc fazer no outono pq chove quase toda hora pelo menos eu fiz assim creio eu que essa e a melhor opção
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By rick eduardo on 26 Nov 2021 00:07
Bruh the rain ones be annoying i drive there and poof no more rain xD
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By Xitl on 03 Feb 2022 23:55
Got all 25 not achievement
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By Hirogen Hunter on 15 Mar 2022 12:58
Does it have to rain for achievement? After getting 25 of 25 Alien Debris
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By Hirogen Hunter on 16 Mar 2022 01:01
Thanks
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By OBlockMafia on 27 Jan 2024 19:44
Just a quick comment - It has to be night time for the alien cells to be visible (yes, really) and it has to be RAINING for the flowers to appear (yes, double really :/).
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By Jayowski on 15 Mar 2022 18:05
For me never becomes night in the LEGO DLC.

After I posted this, now today got night time 2x laugh
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By KGI KlikoNL on 09 Jul 2022 21:33
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