Wow I am impressed, McCarron! I used to have all the MK titles but not at the same time. When I had Sega back in the 90th. I had MK1, MK2, MK3/UMK3
On PS1 it was MK4. I had no Dreamcast but it's possible to play MKG on PC with emulator
Today I have MKDA, MKSM and MKA for PS2. And MKvcDC on PS3.