Yeah, I know what you mean, I planned on improving the controls because it can get quite confusing when walking around the planet, but due to the time limit I unfortunately didn't get to it.
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I uploaded the game at 4am in the morning in my time-zone so I could finally go to sleep. Also the 15h are probably because of the 1st upload I did and later on I updated the version I already uploaded so the website probably didn't record that time. In summary I uploaded the game like 8h before the end-period, because I assume we all need our sleep.