I've had at one point every pokemon game(the RPGs) made minus green. Over the years, some have been lost or stolen.
Now I either have the physical game, or a ROM.
If memory serves, I still physically have:
Silver
Sapphire
Emerald
Ruby
FireRed
Diamond
Pearl
Platinum
Red, Blue, Yellow, Gold, Crystal and LeafGreen were all stolen over the years. Most recent my LeafGreen. My ex's cousin stole it thinking it belonged to the ex.
The others were all in a shoe box at my friend's house(I stayed there that Summer) with a collection of Playstation games and a bunch of her games that just vanished one day. I'm convinced her mom threw them out. She was always griping about how we never did anything but play games inside all day.
The ones that were stolen/thrown away/lost I have on ROMs.