Green Project is a gem in my book, considering the price and current state of the game.
The developers keep adding new content and bug fixes, so it's just a matter of time until the game is as big and complex as other (retro) survival games that went gold.
Some things are occasionally a bit repetitive but usually it's nothing but a necessity to get something better like a tool or being able to finally access a new area that gives you new things to explore. It's about right, like in Stardew Valley, imo.
Nothing to complain about regarding the atmosphere. Good color scheme, world feels depressing and dead until you intervene and bring it back to life. It's nice to witness the progress.
You have to plan ahead at first, since you are surrounded by the funugs and your options are limited, but if done right you are giving much more freedom to explore, craft, grow crops and breed animals as you please. You can gain access to new areas, loot buildings, find new recipes that unlock new content, farm in the mine, fish, plant trees... there's a lot to do and more is coming.

Nitpicking the only things that you could nitpick about:
Nothing annoying, except for that cat which keeps meowing each time you cross its path until you adopt it and the "Ah, sand" speech bubble that keeps popping up every time you pass certain spots in the desert.
Additionally, there is currently no option to recycle or destroy some of the things in game, like an old hatchet that you no longer want to use or repair, while other stuff can be burned or vanishes after some time not gathering it.
I understand it is most likely a safety feature to avoid people accidently burn their tools, so I hope there will be some sort of recycling bin where you can throw away stuff purposely that you no longer want or need. I will update the review if they should change or add that feature.
Last but not least some of controls take some getting used to. It isn't that bad but a few things could be improved to allow a more intuitive and fluid gameplay imo.
Other things that are missing are a proper tutorial (may it be optional for anyone who has never played such a game) and maybe a few more notes or an NPC that could add more depth to the story (where exactly happened,, what did the people do to fight it, are there any survivors...), and a cut scene when you fought the fungus successfully and the contamination reaches 0.
It's probably just a matter of time until those things are available, so I don't consider them a big issue right now, it is here and there just noticeable that the game isn't finished yet.

Conclusion:
It's a nice and fun game that's somewhat difficult in the beginning and more rewarding later, with a few things missing.
If the developers keep adding more stuff, as they do right now, expand the world a bit further, e.g. a science lab, military base or so that offer more detail to what has happened, add few details to the enviroment (some roads are just dead ends at a wall with no visual clue, like a blockade, that would make the world more believable and feel less "chopped") and maybe an NPC that gives you more background story (in return for goods), I actually see no reason why the game's shouldn't become a huge success.
It's still in developement, so the few things I was nitpicking about are nothing that should keep anyone from buying the game and supporting the developers, so they are able to give us exactly what is currently missing.
I played the game every day for a week for about four hours a day and later on occasionally while listening to music or an audio book. It's quite enjoyable either way.

Green Project is a gem in my book, considering the price and current state of the game. The developers keep adding new content and bug fixes, so it's just a matter of time until the game is as big and complex as other (retro) survival games that went gold. Some things are occasionally a bit repetitive but usually it's nothing but a necessity to get something better like a tool or being able to finally access a new area that gives you new things to explore. It's about right, like in Stardew Valley, imo. Nothing to complain about regarding the atmosphere. Good color scheme, world feels depressing and dead until you intervene and bring it back to life. It's nice to witness the progress. You have to plan ahead at first, since you are surrounded by the funugs and your options are limited, but if done right you are giving much more freedom to explore, craft, grow crops and breed animals as you please. You can gain access to new areas, loot buildings, find new recipes that unlock new content, farm in the mine, fish, plant trees... there's a lot to do and more is coming. Nitpicking the only things that you could nitpick about: Nothing annoying, except for that cat which keeps meowing each time you cross its path until you adopt it and the "Ah, sand" speech bubble that keeps popping up every time you pass certain spots in the desert. Additionally, there is currently no option to recycle or destroy some of the things in game, like an old hatchet that you no longer want to use or repair, while other stuff can be burned or vanishes after some time not gathering it. I understand it is most likely a safety feature to avoid people accidently burn their tools, so I hope there will be some sort of recycling bin where you can throw away stuff purposely that you no longer want or need. I will update the review if they should change or add that feature. Last but not least some of controls take some getting used to. It isn't that bad but a few things could be improved to allow a more intuitive and fluid gameplay imo. Other things that are missing are a proper tutorial (may it be optional for anyone who has never played such a game) and maybe a few more notes or an NPC that could add more depth to the story (where exactly happened,, what did the people do to fight it, are there any survivors...), and a cut scene when you fought the fungus successfully and the contamination reaches 0. It's probably just a matter of time until those things are available, so I don't consider them a big issue right now, it is here and there just noticeable that the game isn't finished yet. Conclusion: It's a nice and fun game that's somewhat difficult in the beginning and more rewarding later, with a few things missing. If the developers keep adding more stuff, as they do right now, expand the world a bit further, e.g. a science lab, military base or so that offer more detail to what has happened, add few details to the enviroment (some roads are just dead ends at a wall with no visual clue, like a blockade, that would make the world more believable and feel less "chopped") and maybe an NPC that gives you more background story (in return for goods), I actually see no reason why the game's shouldn't become a huge success. It's still in developement, so the few things I was nitpicking about are nothing that should keep anyone from buying the game and supporting the developers, so they are able to give us exactly what is currently missing. I played the game every day for a week for about four hours a day and later on occasionally while listening to music or an audio book. It's quite enjoyable either way.