Visit the Steam Community Hub for WWE 2K15 or the PC Gaming Wiki for advanced registry edits. Happy wrestling, and remember—the only thing that should be missing from your game is your opponent’s health bar, not your steam_api64.dll .
To understand the fix, you must first understand the file. The steam_api64.dll is a Dynamic Link Library (DLL) file developed by Valve Corporation. It serves as a bridge between the game executable (WWE 2K15) and the Steam client. Steam Api 64 Dll Wwe 2k15