I just want some recommendations for a good downloadable game for the Wii that is 900 points or less.

That's all I have left in my account and I just want to go ahead and spend it all up.

The original mario games.
I think a Link to the Past.

A couple of these are over 900, but all are quality games.

Wiiware:
Cave Story
Lost Winds
Fluidity
bit.trip (take your pick- there are six bit.trip games)
Final Fantasy IV: The After Years
Nyx Quest
World of Goo

There are too many good VC games for me to list

Zelda: A Link To The Past if you have the classic controller or GC controller.
800 Points.
F-Zero SNES (800)
Donkey Kong Country SNES (800(?))
The Legend Of Zelda 1 (500)


WiiWare:
Cave Story
Bit.Trip
Bomberman Blast


If you get to 1000 points; good VC:
Zelda Majora's Mask
Super Mario 64


I would look for more -- but I don't have my Wii with me

WiiWare: SnowPack Park. I kid you not, it's a half decent game.

Wario's Woods - the only game I played in which you play an actual character in a puzzle game. It's tight.

I heard there's also another Phoenix Wright on WiiWare - you can check it out. That may or may not be up your alley, though the Ace Attorney games are all pretty great. The Phoenix Wright series contains some spiritistic elements, though, so be aware of that.