@geek-master Which UNO did you download?

_{what do you meen? i bought the one everyone got on their dsi UNO dsiware.....}

i like bird and beans

@bluecat WELL, I am the #1 electroplankton fan, so I'll try to help. This is for everyone else trying to decide, also.
ELECTROPLANKTON
Trapy: on this one, you draw a line to make a trapy[a certain type of electroplankton] follow it. There are 7 trapys, wich means seven lines. When you draw a line, the trapy follows it at the same rate you drew it. If the line goes to the right, the trapy makes high pitched noises as it follows it. If the line goes to the left, the trapy makes low-pitched noises following it. It's pretty fun, but I would not get this one if you had to choose.
Hanenbow: On this one, you have trees have leaves, and you have tadpole-like electroplankton called hanenbow shooting up out of the water the trees are in [might sound confusing, but it's not]. When the hanenbow hit the leaves, they make a noise. Different parts of the leaves make different pitched noises. The hanenbow bounce of the leaves depending on the angle the leave is at, and the angle the hanenbow hit it from [yes, it does use actual physics]. There are 4 different tree combinations for you to play with. It's definitely one of the more fun electroplanktons, and it is definitely one to consider.
Luminarrow: In this electroplankton, you have a 6 x 6 grid of arrows, and 4 electroplanktons called luminarrows. When you touch a luminarrow, it starts moving along the arrows, going whatever direction the arrow is pointing. Every time a luminarrow passes over an arrow, the arrow makes a sound. Each arrow has a different assigned pitch when a luminarrow passes over it. Each luminarrow moves at a different rate, and each luminarrow has a different sound when passing over arrows. You can change the direction the arrows are pointing by touching them. This is also one of the better electroplanktons, and it's fun to play with. Definitely one to consider.
Sun-Animalcule: In this game, youm have a blank colorful screen. Where ever you touch it, a tiny electroplankton called a sun-animalcule appears. Each sun-animalcule makes noises over time [in a rythym], and the pitch method is similiar to Trapy [left is low pitched, right is high]. After about five minutes, the colors on-screen change to reflect a different time of day. When the screen is dark and it is "night", instead of sun-shaped sun-animalcules appearing, moon shaped Falcatos appear, which make a different sound. This is also a fun electroplankton, and I would reccomend it, though not as high as Luminarrow or Hanenbow.
Rec-Rec: In this game, you have 4 fish-like electroplanktons called Rec-Recs swimming across the screen. If you tap on a Rec-Rec, the next time it swims across the screen the microphone will star recording your voice [or whatever it is you are recording]. There's not much else to it, but you can use the up and down pads on the d-pad to change the backround track. This is definitely NOT one of the better electroplanktons, and is not worth it [unless you are an electroplankton fanatic like me, which you should be ]
Nanocarp: In this electroplankton, there are 16 small electroplanktons called Nanocarps on the screen. If you tap the screen, a small shockwave in the shape of a circle spreads out, causing the nanocarps to make a noise if they are hit. If you make a noise into the microphone [or press select if you aren't in a place where noise is a good idea], the nanocarps will form a shape or formation. Pressing different directions on the D-pad make a shockwave in a line go from one side of the screen to the other, causing the nanocarps to make different noises. This one is pretty fun, but not as good as Hanenbow or Luminarrow.
Lumiloop: In this electroplankton, there are 5 O-shaped electroplanktons called lumiloops on the screen. If you hold down your stylus on them and make circles with it, the lumiloops will start to spin, making hypnotic lovely sounds. If you spin all five at once, it makes a very pleasing noise, and is great for soothing. Spinning them clockwise makes a different noise from spinning counterclockwise. There are 3 different sets of Lumiloops, with each set being a group of 5 electroplanktons. Each set has lumiloops that make different sounds. This electroplankton game is fun, but not as good as Hanenbow, Luminarrow, or sun-animalcule.
Marine-Crystals: In this electroplankton, there are many snowflake-like electroplanktons, Marine-Crystals, in a grid pattern, or making a shape. If you touch a Marine-Crystal, it makes a sound very similiar to a piano key. Each Marine-Crystal makes a different pitched note, and all the electroplanktons switch places as you touch them. There are 4 different sets of Marine-Crystals. This one would be more enjoyable if the Marine-Crystals didn't move, but alas, they do. It's not quite as good as sun animalcule, but it's about as fun as nanocarp.
Beatness: in this one, you have 5 electroplanktons, each with a head segment, a tail segment, and 8 small body segments in-between the head and tail. In the backround, there is a classic nintendo game music playing. Every time you touch a segment, it makes a sound, which repeats after 8 beats. There are 4 classic nintendo songs to choose from, with each song having it's own set of sounds. This is definitely one of the better electroplanktons, tying with hanenbow, and luminarrow.
Varvoice: On this electroplankton, you have a tear-drop shaped creature called a varvoice. When you touch the varvoice, the mic starts recording, just like in Rec-Rec. After it has finished recording, whatever was recorded starts playing back repeatedly. There are many different shapes along the bottom of the screen, and when you touch one, the recording will be changed in some way. You can also clear the recording. This electroplankton is sort of like a simple version of the DSi sound app, and is thus not worth it [once again, unless you are an electroplankton fanatic like me ]
Here is the electroplanktons in order of greatness:
1. Hanenbow
2. Luminarrow
3. Beatness
4. Sun-Animalcule
5. Marine-Crystals
6. Nanocarp
7. Trapy
8.Lumiloop
9. Rec-Rec
10. Varvoice

_

Just so everyone knows, the names were changed since the original cartridge game. They are still very similiar, so don't worry.
Here is a video showing them all in action.

And here is the electroplanktons first impressions thread Electroplankton FTW!
I hope this helps, and check out the NL reviews of all the electroplanktons for more input!
DISCLAIMER-THINGY I tried to write all these without being biased, but I can't tell from my point of view how un-biased these are. I strongly suggest checking out the NL reviews, or trying the Electroplankton impressions thread to get more opinions on the matter.

I'm saying you have to accept two users of an internet forum opine that the AI in UNO is ridiculously hard, and Gameloft did not do "a wonderful job." Two users of an internet forum also opine that the AI does in fact cheat. Maybe you're an UNO master, because I play it (the IRL card game) pretty regularly and playing it on DSiWare against CPUs is maybe 40 times harder. It's not like I suck or anything.

I still haven't hears any opinions on Rayman, so is it worth the $8 or should I just skip it?

@supermarioman

For me it was worth the points, but thats just because it was my very first video game ever.
It brings back memorys and stuff... I think if you want a simple platformer Castle Of Magic is also pretty good..

@Supermarioman: I have Rayman for DSiWare. I think I have talked about it previously in this thread, so check out my other comments. I think it is the best platformer on DSiWare, but be ready for a tough challenge. The presentation and music is truly top-notch for DSiWare. So yes, it is worth the $8. I'm not sure about Reflection, but I am excited about Dark Void Zero as well.

Whats the best 500 points game?

@thelawyer I would have to say Pop Island. If you already have that, I think that army defender/myNotebook and an electroplankton are good, plus you get a worthless 100 points left over!

I have army defender but I live in the UK so i can't get Pop Island electroplankton yet. I guess i'll have to wait till they come out in the UK.

@110percentful - Thanks for the great overview on Electroplankton! I think I'll get the Hanenbow or Beatness version first.

Probably the best 500 point games in Europe (in my opinion) are Reflect Missile and A Little Bit of Puzzle League. At least, in my opinion those are the best.

I would say the best three 500 pointers are Reflect Missile/Trajectile, Starship Patrol and Art Style PiCOPiCT in that order.

@bluecat your welcome, and thank YOU for calling it great!

PiCTOBiTS is a fantastic game, if you don't already have it. It holds my #2 spot in my most favorite downloads on DSi. (With #1 being MvDK)

Ok thanks everyone for telling me. I might get reflect missile and an art style game.

Really? 60 dollars? When I bought Electroplankton it was 14.99
And personally, I believe that Pop Plus has more content and more value than 3 electroplanktons.

I just have a question: in Art Style: Precipice, do you controll the guy going up the tower or do you move the blocks for him and he climbs the tower by himself?

You move the blocks while controlling him. You move with the d-pad, climb when you want to move onto a higher platform automatically, and push blocks with the face buttons. You can only climb one block at a time.