Do you like Alexey Pajitnov's timeless puzzler Tetris as much as you like succumbing to unrelenting waves of nausea? You'll probably want to check out the new Flash-based sensation, First-Person Tetris. There's not much of a learning curve, here -- it operates pretty much exactly like the block-dropping puzzler you know and love, only with a small twist. We'll let you figure it out for yourselves -- why not give it a spin, provided you've got some free time (and a strong, strong stomach).