The Classic Patch series is famous for its longevity, with versions existing for FIFA 14, 15, and 16.
However, a warning: Because the patch is fan-made, the transfer logic is scripted. You cannot buy Kylian Mbappe in 1998 (he wasn't born), but you can watch a pixelated 1998 Thierry Henry evolve into a god-tier winger before your eyes. Fifa 15 Classic Patch