Well, downloaded CUBELLO and have just been playing it, for those with storage space issues this game must be about as small as they come, almost instant download at 47 just blocks
Don't let the file size of the game put you off though, it's a fantastic little game and will be a real shame if it gets overlooked in the US due the the deserved success of World of Goo.
Almost has a Lumines style interactive vibe, the electro music constantly changing with the action on screen and Stephen Hawkins sounding 80's style synth voice commentry throughout. The sounds are really very impressive for such a small(not to mention cheap) WiiWare title.
Gameplay is very addictive, the match 4 mechanic that we all know so well, but nicely different, with the cube constantly spinning and changing direction with every block contact, you need to be careful too as you can easily run out of blocks in your 10 shot magazine(you get awarded extra blocks in your magazine each time you break 4 or more blocks). Not an easy game by the way, infact I would say it's pretty challenging what with needing to be sparing with the blocks you fire, but all the time you aren't firing blocks the sphere moves closer to the screen(when it gets too close it's game over). Very satisfying as you strip away the blocks to reveal the core(this is the aim, to leave only the un-destroyable core block at the end).
The graphics too, while fairly basic are again impressive for what you expect from such a small game, the cube itself is nice & clear with well defined coloured blocks, and now and again it gives you bonus time where the background goes all psychedelic(during which time you have infinate blocks to fire).
I wouldn't say I fully understand all the ins and outs of the game yet(although there is a tutorial section which I really should go through next time) but I can see this game will get better and better as I become more skilled at playing it. All in all really pleased with this purchase, taking into account the price I would easily give this game a 10/10, was hoping it would be good but it far exceeded my expectations. 600 points well spent!