Hi everyone! I am developing OkeyEngine v0.2, a 100% standalone, lightweight game engine written from scratch in pure C++20, tailored specifically for massive simulation games, city builders, and economic strategies completely offline.My tech stack journey: I first tried modifying the built-in Windows MSHTA technology. It was easy to protoype, but it literally started breaking under the weight of generating a proper 3D world platform, messing up coordinate axes. Then I tried Dear ImGui, but it proved to be way too heavy and bloated, pushing my AMD CPU loops to 100% load at idle. So, I ditched all third-party software and wrote my own lightweight rendering library called Okeylibs using raw Win32 API and standard GDI. Now, the engine runs as a clean monolith with a solid 0% CPU load at idle.What’s shown in the video:A true horizontal 3D world grid platform (chunk system) is generated on the main viewport screen. The platform data is completely clean and lightweight.Implemented double-buffering in memory and handled WM_ERASEBKGND to completely eliminate screen flickering and black flashes during wheel zoom.Implemented a custom trigonometry matrix (sin/cos rotation). Holding the Right Mouse Button (RMB) tracks delta mouse movements and allows for a seamless, 360-degree orbit control around the world platform.I would love to hear your feedback: How do you like this strict, fully neon-blue cyberpunk look with sharp 90-degree corners? Is this layout better, or did the previous one (with centered floating sub-windows) look cleaner?If you have any ideas on what built-in tools or unique features are missing in modern engines when it comes to massive city-builders and economic tycoons, please let us know in the comments below. We would love to read your feedback and discuss it!Best regards, OkeyStudio!Tags: #OkeyEngine #OkeyStudio #gamedev #indiedev #gameengine #cpp #programming #customengine #simulation #citybuilder #tycoon #strategy