If you're concerned about downloading from third-party sites, consider purchasing Terraria from the official website or a reputable digital distribution platform like Steam, GOG, or the Microsoft Store. This way, you'll receive a safe, legitimate copy of the game with easy access to updates and support.
Please be aware that downloading copyrighted content from unofficial sources may infringe on the game's terms of service and potentially harm your computer. Always prioritize official sources for software downloads.