According to ProtonDB, it seems to work fine. AOE 2 seems to work after tweaks. AOE 3 seems to work fine if you disable Steam overlay.AOE 4 seems okay for single player, though it seems YMMV with a multiplayer fix.
If in doubt, check proton DB for tweaks.
AOE2 DE doesn’t work fine scroll down to all the people saying it doesn’t work on their flavor of proton. I would know I bought it couple months ago and refunded it because it just wouldn’t work. It doesn’t seem they fixed anything either.
The most recent comment that claims it works is from 3 days ago, and it seems you need a startup command. So it seems to have been completely broken as of a week or two ago, but potentially there’s a workaround on the latest Proton experimental.
So your experience from a couple months ago may no longer apply.
Nope still doesn’t work, it used to work on proton 5, 6, 7, 8 flawlessly. Now you have to install a custom proton that includes a simple fix to be able to play the game (this fix only works on proton 7 and 8 and your performance its questionable). Also this isn’t official so you can get banned at any moment. Having to use bleeding edge proton for something that used to work on proton 5 flawlessly is not a fix.
