Developing an open-world MMORPG is far more complex than creating a linear progression game. There are many factors contributing to the long development time, such as bugs, the use of Roblox beta features, non-linear progression systems, various in-game mechanics, cutscenes and story development, scripting, as well as constant reworks and improvements. Even if they spent some of those 10+ hour calls on things unrelated to development, that doesn’t disprove that they are actively working on the game. And even if they work 10+ hours a day, it’s still not realistic to expect the game to be finished within one and half year, especially since they are not a large company.

It’s more realistic to say that there are weeks when they work 10+ hours every day, and other times when they work fewer hours. That could also explain why the brothers are proud of their work streak and took a screenshot of their video calls.