I managed to get into a really good guild in Idle Universe Online (IOU). Guilds make a huge difference and I was lucky enough to get into a really strong guild with some good leadership and structure. As a guild levels up they give players in them bonuses to every area of the game. Each building you see in the screen shot provides a different bonus and guild members can donate towards further increasing the level of each building.
I'm brand new so I'm not taking advantage of everything just yet but I plan to once I get access to the guild spreadsheet and hopefully can get placed in a guild party to help me fly through the levels. The guild is pretty diligent about everyone contributing and progressing. It's been nice just having a guild that communicates with each other and I'm really excited to ramp up my progression as well!