I got Aquaria as part of the Humble Indie Bundle 2 bonus pack. I am in "The Body" at the moment and, I think, getting close to the bottom of things.
My Overall Impressions:
I appreciate the game's Zelda/Metroid feel (I suppose more Metroid than Zelda.)
I like the part of this type of game where some things seem to be part of the scenery but you have this odd feeling that it may be useful later. Some games make things obvious with unlit torches flanking a door you can't open. Obviously, you'll get a fire spell/wand at some point. Aquaria had a little of that (it's hard not to) but one particularly subtle one I enjoyed (mentioned in the specifics below.)
However, one aspect of those previous examples that Aquaria seems to be missing, is "training". It seems as though after a power is granted, it may go unused for quite some time or never really used at all. There was one power in particular which didn't occur to me to use on a boss (see spoiler labeled area below) because it had never been useful before. In Zelda, the whole dungeon is generally a trainer for the dungeon's item, while the Metroids regularly gave little "gauntlets" to illustrate use of a new power up.
Good game! I've enjoyed the challenge so far. Swapping forms in a frantic boss fight is merely difficult, not impossible. It's a skill to be built, putting the challenge level in about the right spot for me.
One more thing: I think it might be an issue with the nVidia drivers, but when I get severely injured, and the screen flashes red, I get slowdown. I like the life-flashing-before-your-eyes feeling of it and it gives me a moment to escape to the inventory screen to save myself. Does anyone else get that.
-Triften
Specifics below:
(Spoilers perhaps)
Beast Form:
I definitely liked the Beast form for overcoming currents. Initially, the game gives the impression that currents are just part of the terrain and are something to live with. Though I did get a little suspicious when there seemed to be some dead ends with current flowing out of them. I liked the subtlety.
Sun Temple Boss bug:
Once, when fighting the sun temple boss, it launched out of the water at a really low angle and slipped "through" the door. It got stuck on the far side so I couldn't hurt it and both Li and my blaster pet were clipping in the door, so their attacks couldn't get to him either.
Song to Boy Ghost:
You've probably heard this before, but that was a bit much... perhaps having the notes light up when played properly? I'm not completely tone deaf, but I wasn't able to catch that that particular tune was what the mother ghost was singing.
Golem Boss:
This is the one where I had to look up what to do. Back when I was a little kid with very few games, I had more of an inclination to hammer (har, har, har) away at a boss, trying out different attacks, because I had little else to do, and a new game wasn't coming until Christmas, if I was lucky. Anyway, I bailed on the Golem after two deaths and countless Tough Cakes to look it up in a walkthrough. The Beast form "spitting" attack never needed to be used until this. I hadn't bothered using it at all. (It did seem to be a little glitched: the blue bounce shots from frogs sometimes got spat out with 0 velocity.) So when I got to this part, it didn't even occur to me to try it. Granted, the Golem almost requires Beast form's speed to dodge, so that's a bit of a clue. But having the player face a small beasty immune to regular Energy form shots to demonstrate the Beast spitting would have been a nice intro to the power. There could be some sort of large (mostly inert) mollusk blocking the exit from the boss cave. Shooting it causes it to launch mostly harmless things to eat and spit back (while the game tells you "dash to eat things, right click to spit them out")
Spirit Colors Bug:
This is a bug... or something. I'm using 1.1.3 for Linux, and when I went to free Li, I said "Alright, no walkthrough for me! I can do this!" and I went through every sequence of the colors of the spirits around me... In the version I'm playing one of the spirits is green instead of orange so they were all wrong. R-O-N-G. The upside is at least I picked up on what I needed to do, I just could not have gotten the right colors.