Sites claiming to offer a "free full download" for the PC version are often unofficial and may contain security risks such as malware. Castle Story on Steam
Searching for a "free full game download" of typically leads to two different games. The PC version is a paid title, while the mobile version is free-to-play. PC Version (Paid) Castle Story (2017) Free Full Game Download
Players command small creatures called "Bricktrons" to gather resources, build elaborate voxel-based castles, and defend them against "Corruptron" monsters. Sites claiming to offer a "free full download"
You can purchase the game on Steam , where it is available for Windows, macOS, and Linux. build elaborate voxel-based castles