I'm sliding over motes and even tried ballistic slamming directly into one to try an pick it up and no luck.
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Running back, running fast, jumping over enemies to deposit ALL THOSE MOTES you just collected from a crap-load of defeated foes. You're sweating bullets, literally, you don't look at your mote count, must get to magic mote box. You almost die four times, you make it! Press X... ... ... 2 motes collected. You cry.