The game certainly delivers a level of tension - it becomes easy to panic and mark the wrong block, or get out of synch with one's intended strategy, marking when one means to capture and vice-versa. But the basic gameplay doesn't really change - the first level is tricky, and the second one demands faster thinking and more agile reflexes. And, I imagine, Intelligent Qube continues to get more complex and challenging, with tougher block patterns and faster tumbling. Level 2 ups the ante significantly, with more black cubes and larger sections of tumbling blocks - three or four rows of granite death to contend with, instead of the two we started out with.
