Edit: After coming back to play with a gamepad, I have discovered so many game design sins in the first few minutes that I'm completely turned off. Lengthy, unskippable dialogue, how to replenish your potions is not explained. The first time I returned to the sanctuary and exited, my progress was not saved; this time, I played until I had explored the whole lower section to dead ends, returned to the sanctuary, was presented with the character progression menu, and still can't tell if my progress was saved. I'm not sure if I was supposed to die back there to trigger something, or what. I'm also not sure if I'll ever launch this game again. Nice idea, gorgeous graphics, save your money.
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I'm certain I'll be back to play this game with a gamepad, but the first moments were very off-putting for someone who wasn't expecting the default controls (and might have been off-putting regardless.) You begin the game with the menus disabled, dropped into a gorgeous hand-drawn environment where your character is trudging, slowly and against the wind, through desert sands. After a moment, you realize the only button at your disposal is the right arrow, so you hold it for what I think was about 30 seconds, watching your character trudge and trudge through an empty landscape, before you get a brief eldritch animation and access to the menu.
Now that I have access to the menu, I see that rebinding the movement keys to WASD would require me to also rebind some other functions, already bound to those buttons, but I don't know what those functions are because (as the menu helpfully informs me) I haven't unlocked them yet.
I am annoyed enough to put this aside for a while, and return to it with a gamepad later. Everybody else seems to have enjoyed it enough that I'm confident I will, as well, but not with the keyboard setup and not right after that introduction.