The idea is great and intriguing. I really think there is a great game behind it. You should explore it further once the review period for the jam is done.
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Hey, I watched your stream. It seems my instructions are really horrible, lol. There is no randomness to the death timer at all. After you break a shard you have to let the broken shards record for a while before jumping to it. As they start rewinding to their start position after jumping on them (so the less time you let the shard record, the faster you die after jumping on it). Thank you for trying it out though.