Just watched part 1 and 2... Man they are pretty spectacular. My question is, what was the game that got cancelled?
You could choose one of three classes - Summoner, Warrior, and Scamp.
Warriors were good at clearing out blocks (specifically locked blocks that were tough to clear). One of my favorite builds revolved around taking the "Stun" skill which allowed a chance for temporary slowing of falling blocks on crits. If you paired it with two Blockade daggers, your line clears would crit pretty often. It allowed for lots of falling block stoppage which allowed you to set up huge line clearing combos.
Summoners were really good at block manipulation. Moving blocks from one row to another or one column to another. At higher levels you could do some really sick stuff. I remember the "Fireblast" spell was great for clearing out future blocks that hadn't dropped yet. It allowed you great choice in selecting a good block for maximum clearing.
Scamps were my favorite. They were strange, though. A lot of their abilities would get much better as more of the screen was filled with blocks. They were also the best at clearing locked blocks... in fact, they would get a pretty good XP bonus for clearing them. Normally you would avoid locked blocks, but they were your friend if you were a Scamp.
You gained experience by clearing lines and it would scale your experience gain proportional to your speed. The faster that you cleared lines, the higher the XP gain. You could also chain line clears (clearing a line every time a new block would drop) for some insane XP gains.
I was really sad when it was cancelled, but it was probably for the best.