For me, it's so far something like: Bayonetta (360 to Wii U) Kingdom Hearts series (PS2 to PS3) Dead Space series (PS3 to PC) Fallout 3 (360 to PC) Batman: Arkham Asylum & City (PS3 to PC) Guilty Gear Xrd SIGN (PS4 to PC) Devil May Cry 3: Special Edition (PS2 to PS3) Devil May Cry 4 (360 to PS3 to PC w/ Special Edition) Final Fantasy VII (PS1 to PSN to PC) Final Fantasy VIII (PS1 to PSN to PC) Max Payne 1&2 (Xbox to PC) Max Payne 3 (PS3 to PC) Metal Gear Rising (PS3 to PC) Metal Gear Solid (PS1 to PSN) Metal Gear Solid 2 & 3 (PS2 to PS3) Metroid Prime (Gamecube to Wii to Wii U) Metroid Prime 2 & 3 (Wii to Wii U) Silent Hill 2 (Xbox & PS2) Sonic Adventure 2 (Dreamcast to 360 to PC) The Walking Dead (360 to PC) AND THE KING IS NOW: Final Fantasy X/X-2 (PS2 to PS3 to PS4 to PC)
The KH series. Triple dipped on CoM as I'm sure a lot of us did by getting the original, the PS2 version, and the version within KHI.5. Dragon's Dogma. Triple dipped on that one by buying the original, Dragon's Dogma: Dark Arisen, and then the PC version of Dark Arisen. And...that's it I guess.
KH series (Everything -> PS3) The Sly Cooper trilogy (PS2 -> PS3) Actually those are the only two that really come to mind for now. There's probably more but I can't exactly remember any...
bought kh like 3 times, kh2 at least 4 times, com twice, bbs twice, re com's us release as well as kh2fm+ twice (which makes it like 3 times for recom), and the other fm's once each. ultimate spider-man twice soon to be thice. budokai 3 a couple times too
Double dip as in ports or HD "remasters" Either way, a lot. I own four copies of Thomas Was Alone. I don't even like it that much.
Pretty much every game I've ever owned except for the used DS games I played and returned immediately following completion when I was going to college in Colorado. So more than I care to remember
This may take a moment to remember... Diablo III (PC then PS4) Guitar Hero 3 (PS2 then Xbox 360) Certain Need for Speed games (PS2 then Xbox 360) Persona 3 (if you count portable) Rockband 2 (PS2 to Xbox 360) Kingdom Hearts Birth by Re:HD Remix 358/3D Coded Collection (PS2 to PS3 in multiple regions) Final Fantasy X (Square pls) Final Fantasy VII (SQUARE PLS) Sly Cooper 1-3 (PS2 then PS3 then Vita, yay for having separate trophy lists for whatever reason. Sly 1 ezpz platinum. Can't get enough of those three games tho) Skyrim (Captain Jack Sparrow then PC) Bioshock Infinite (Captain Jack Sparrow then 360 then PC) Pokemon 1st gen (gameboy then 3ds weird port thingy on the whatever store that's called) Megaman Battle Network 1-4 (I think its 1-4, gba then whichever is available to download on the nintendo store thingy.) Halo Collection (360 to the shite remake on the Xbone) Megaman Zero Collection (individual gba games to that ds collection thing) Fallout 4 (bought the collectors edition for the Xbone then just bought it digitally on PS4, plan on buying it for PC too LOL) The Orange Box (Xbox 360 to PC) Hitman Absolution (Xbox 360 to PC) Call of Duty Black Ops 2 (Xbox 360 to PC, playing zombies in 4K is fun) Borderlands 2 (Xbox 360 to PC to PS4 in that collection thing) Spyro 1-3 (PS1 to my old PSN tied to my PSP then my new PSN) Crash Team Racing (PS1 to PSN I think) There is probably more but yeah that'll do for now.