Terraria is an adventure game developed by ReLogic, which also contains some action. The game hit Windows in 2011 and since then it has been developed and distributed on other platforms. Unlike other games, Terraria is also available for smartphones.
However, Terraria continues to take off at startup or is permanently locked on the desktop during the game. You are not alone. Many players report that you are not alone.
But do not worry. Here is a general guide to troubleshooting problems associated with Terraria failures. You might not have to try them all. Just look through the list until you find one that works.