Notes on the undo feature:
- Quarry still autoplays and can't be undone. (This is okay! Just something to be aware of.) Once you've played the Quarry, you can only undo Coppers, not Silver/Gold (also Harem). If you click manually to play the Quarry before the basic treasures, you can still undo them.
- Once you buy something, you can't undo anymore (reasonably enough).
- Hoard still autoplays and can't be undone. Once you've played the Hoard, you can only undo Copper/Silver (also Harem), not Gold. If you click manually to play the Hoard before Gold, you can still undo the Gold.
- Coppers played with Coppersmith can be undone.
Just played a solo game to try out a few things. I noticed that you can play a basic treasure, then a special treasure, and then another basic treasure, but you can only undo basic treasures played since the last special treasure. So if, for instance, you play Copper-Fool's Gold-Copper-Copper, you can only undo those last two Coppers.
Quarry, Talisman, and Hoard all autoplay and can't be undone. I guess just be careful when you have special treasures.
Harem, Cache, and Stash all autoplay and CAN be undone, just like normal treasure.
If you click the button to play all your treasure, and you have special treasures that autoplay like Quarry or Talisman, they will sometimes be played near the beginning and sometimes not. I can't tell what order they're in. All I know is, sometimes there's an undo button and you can undo some of the autoplayed treasure, sometimes you can undo all of it (except the specials), and sometimes you can't undo any of it. For instance, I played a Silver, a Talisman, and a Stash, and I couldn't undo. But then I played a Silver, a Quarry, a Potion, and a Stash, and I was able to click undo exactly once to unplay the potion. Couldn't undo any further, meaning the Silver and the Stash were played before the Quarry.