Sounds like a really fun game. I'm worried it might be a little overambitious. Are you using any real-world data in the game? There are datasets of coastal cleanup data that are publicly available that you could use for the type and distribution of your trash. For example, this NOAA website has beach surveys that include the types of trash that were found when volunteers went to clean up the beach (click Explore Data): https://marinedebris.noaa.gov/our-work/monitoring/marine-debris-monitoring-and-a... Good luck with the game. I hope to be able to play it!