Installed size should be the same no matter the vendor so the worst case figure stays at 19GB. I presume that also direct download from Slitherine will have some compression so probably you should expect again a 12-15GB download.

Base game with all AO DLCs' size of installation is 19.3GB so the compressed download size from Steam will probably be in the 12-15GB range but you can take the 19GB figure as worst case.

Base game has the Wehrmacht campaign so you don't need to buy any AO DLCs. Considering it has both historical/unhistorical paths and Russia/Africa paths you will have enough hours of gameplay.

You can pick the Force Dispersion commander trait at the start of the campaign to limit yourself to 1 hero ...

Temporary disable the antivirus and retry

I usually do the alt history branch first because winning every map on my way to Berlin leave a bitter taste

At 2560 x 1600 resolution, during loading, some long gameplay tips are cut:

DefiantXYX wrote: Mon Mar 09, 2026 12:38 pm Unfortunately I like heroes very much while I dont like to play on easy

Force Dispersion (1 hero/unit) is a good compromise

AO 1942 - Operation Blut map

Labels for Western Evacuation Zone don't match the evacuation area:

AO with Aggressive Deployment trait and MEC INF

Before moving, battle predictions for hexes where you cannot unmount are shown like you can unmount:

AO with Aggressive Deployment trait

Before moving, battle predcitions are shown for hexes you cannot attack from (because you cannot unmount):

AO 1940 - Eben-Emael map

Not sure if a bug or a WAD exception for this map but why my airlifted INF (not para) can land out of airports?
Is it because the air transport pool has only gliders and so any airlift use them and behave like para?