The developers of Terraria (Re-Logic) are famously pro-consumer. They have never implemented DRM beyond Steam's basic wrapper. They have released four massive, free updates long after the game was "finished." They have even said they don't mind people trying the game before buying it. But tModLoader is a community project built on the assumption of a legitimate copy.
Searching for "cracked Terraria tModLoader" is a quest for a phantom that, even if found, will deliver a broken, isolated, and potentially dangerous experience. You will spend more hours wrestling with crashes and missing mods than actually playing. cracked terraria tmodloader
Here is the uncomfortable truth: