I noticed that I could not find any game that has a native 64-bit version on the x86 platform (there are some for platforms, obviously for example the Nintendo 64). In fact when I asked if the Allegro library supported 64-bit, the developers had no idea. When I tried to compile something for 64-bit my compiler failed (it was MingW, it wrote that 64-bit is not implemented).
This this make me wonder: why?
At least if the issue was 32-bit-only machines, you could make two .exes and run the more appropriate one or something. But I haven't even seen that, so why does nobody make 64-bit games?