True or better Random numbers with Javascript [duplicate]

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Assuming you’re not just seeing patterns where there aren’t any, try a Mersenee Twister (Wikipedia article here). There are various implementations like this one on github.

Similar SO question:

Seedable JavaScript random number generator

If you want something closer to truly random, then consider using the random.org API to get truly random numbers, although I would suggest only using that to seed, not for every number, as you need to abide by their usage limits.

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