Mine

Linking...
main.obj : error LNK2001: unresolved external symbol _SDL_Flip
main.obj : error LNK2001: unresolved external symbol _SDL_PollEvent
main.obj : error LNK2001: unresolved external symbol _SDL_FreeSurface
main.obj : error LNK2001: unresolved external symbol _SDL_DisplayFormat
main.obj : error LNK2001: unresolved external symbol _IMG_Load
main.obj : error LNK2001: unresolved external symbol _SDL_UpperBlit
main.obj : error LNK2001: unresolved external symbol _SDL_WM_SetCaption
main.obj : error LNK2001: unresolved external symbol _SDL_SetVideoMode
main.obj : error LNK2001: unresolved external symbol _SDL_Init
main.obj : error LNK2001: unresolved external symbol _SDL_Quit
timer.obj : error LNK2001: unresolved external symbol _SDL_GetTicks
LIBC.lib(wincrt0.obj) : error LNK2001: unresolved external symbol _WinMain@16
Release/Tetris.exe : fatal error LNK1120: 12 unresolved externals
Error executing link.exe.