Terraria has had native Linux support since 2015. If you already own the game on Steam for Windows, the Linux version is available to you at no extra cost. Terraria Community Forums Steam (Native):

By using official channels, you support the developers at Re-Logic and ensure your Linux system stays secure while you explore, build, and fight your way through the world of Terraria.

: Ideal for those who prefer DRM-free games. You can download a standalone installer for Linux distributions. 2. Minimum & Recommended System Requirements