The Battle Droids on the last 2 levels 'explode' rather than fall apart with a little fire like on the first levels.

<font face="BernardMod BT"><font color="green1">The ones on the earlier levels will explode also. When they fall to the ground (right before they fall apart) you can get in an extra couple of hits with your lightsaber and they'll often explode. This will also happen a lot if you knock 'em with your Force push and then kill them after they stand up again.

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Master Qui-Gon, Jedi Master
Always remember, your focus determines your reality.

That's not exactly what I meant. Sure they explode and their limbs fall to the ground, but on the last levels it's a rotating-sphere explosion. Try it and you'll see what I mean.