I've spent a little while playing Aquaria and I can report that it seems to run well, I'd say a complete sucess!
My first test was with the wine version on the official Ubuntu repositories, which is version 0.9.46. That didn't go so well at all, so at first I was worried. I didn't have a mouse cursor in game for one thing, I didn't have the beginner's tips either, and the minimap was a bit glitchy, but everything else (including sound) worked beautifully. I tinkered with the options for a while but I didn't have much luck, so I decided to try running it with wine version 0.9.50 off the wine repositories.
And what a difference that made!
With 0.9.50, I was able to fully play every facet of Aquaria, at least as far as I could tell. The mouse cursor, music, tips, minimap, song menu, all other menus, movement, full graphics--pretty much everything I could test, really--all went swimmingly. I even had further success when tweaking the init.cfg. I'm running Ubuntu on a laptop (a 7004-series Acer, and Aquaria runs very well on it despite it having humble specs), one with a widescreen, so the resolutions didn't exactly fit for me. I did find however that the gmae could redaily accept resolutions of 1280x800 and 1440x900 by simply dropping them into the cfg. I can't help but wonder why they're not in the game's config-app, considering that the game quite happily supports these resolutions without any problems (as far as I could tell).
Basically, I'm convinced enough that Aquaria runs beautifully under wine, so I'm about ready to buy it... but (and some of you lkely knew this was coming) I'm worried about the anti-piracy wrapper that Aquaria's full version might use. Could I enquire as to which it is so I could do some research as to whether wine is compatible with it or not? If not, has anyone tried running the full version in wine, and if so, what results did you get?
I'm sorry if this topic has been covered, I did do a search but I didn't come up with anything other than older posts in the supported platforms thread, and a few others even less related, so I decided to post this question myself. I think that this is a good question to ask as the answer opens the door to members of the Linux userbase (like myself) who'd like to play the game. As if there aren't any concerns with the question I've raised, just about anyone with a half-decent computer capable of running wine 0.9.50 (with a default loadout, no windows files nessescary) will be able to do so.