40 minutes later and the list continues:
Games saved in the unpatched Gunlok didn't work after the patch. The v2.1 patch for Blood II rendered previous saved games useless. The 1.002 patch for Waterloo rendered all previous saved games useless. The 1.02 patch for Blood Omen 2 could cause the game to crash if saved games from previous versions were loaded. The 445 patch for Drakan made all previous saved games useless. Saved games was not compatible between patched and non-patched versions of Soldier of Fortune. So they learned a bit a did it better for the next patch. The Soldier Of Fortune II 1.01 Patch did allow you to load previous saved games, but if a bug had been triggered before the game was saved, it would still be present when the game was loaded after the patch. Some of the Nocturne saved games were invalidated by the patch. The 1.02D patch for Fallout 2 invalidated all save games, and you need to get hold of a 3rd party program to convert your saved games to the new format. Saved games from Wages of SiN conflicted with SiN saved games, so the installer was programmed to delete them. The StarFight VI: Gatekeepers v2.02 patch invalidated all previous saved games, but you could still use them, but as the publisher stated: "at your own risk". The Pearl Harbor : Zero Hour Patch 1.22 deleted all saved games since they are were longer compatible. Age of Empires II: The Age of Kings Update v1.0.3 (Mac Only), invalidated all multiplayer games played in previous versions. The Ages of Empires v1.3.1 patch for the Mac screwed up all previous saved games.
I don't think I need to list anymore games were saved games got screwed up by a patch.
It's only after we've lost everything, that we are free to do anything.