I've bought and prepared the Alien modules Destroyer of Worlds, on Roll 20.
I noticed several problems, that took me quite a while to sort :
- Xenomorphs don't have a character sheet. It is perfectly possible to use a character sheet and the 6 tabs available for weapon to deal with different attacks, and it is then easier to handle in combat than just a text description ;
- NPC are not correctly implemented : weapons are badly coded, missing the bonus systematically for example. Some equipments are missing from the NPC sheet, you have to read the scenario carefully to detect it. And some characteristics / Skills are wrong if compared to text describing NPC.
- Maps are exactly the same than in the book, and I think it deserves a bigger map for the interior of North Bastion. Which I did by screen printing the zoomed maps and putting them back in Roll20. This is not difficult to do, and it seems the people paid to implement the scenario should have done it. As a matter of fact they prepared the Dynamic Lighting masks on these particular maps, which are completely useless : small maps means small tokens, so you cannot use them, and neither can you use Dynamic Lighting.
So I had a feeling of quick work, without proofreading by someone knowing Roll20.
The scenario is excellent, but schedule some preparation time !