PC - Prince of Persia, MS DOS version. I'd seen games before and not cared at all. They were garish, ugly, limited, boring, repetitive, empty things. PoP was different. The instant I saw it in motion on my cousin's new family computer I couldn't look away from the fluid animation and atmospheric dungeon. Then came the first sword-fight; by the time I requested a go I was already in love. Once the obsession proved lasting my parents decided to get me a basic PC, in part because they could tell computers were the future and I'd need to learn, in part from sheer gratitude that I was interested in something aside from books for a change.
Mega Drive - shortly after I got into gaming I had a couple of friends who owned Mega Drives, so mostly I wanted one to play the games which I liked best in their collections. I suppose Lion King and Ecco the Dolphin 2 would have been the most important.
N64 - Shadows of the Empire. On the UK launch day no less, purchased with my own hard-saved money. Thanks to my PC experience I knew that Lucas Arts and Star Wars were a gold seal of quality, and gosh darn it look at those screenshots of the Hoth battle! My parents were kind enough to buy me Mario 64 the next day and it was fun and all, but did it have snow speeders taking down AT-ATs? It did not. I was happy with my N64 throughout that generation and still have fondness for the library. A lot of the PS1's froggy-suitable games either had PC ports, didn't come out in Europe, or passed by my awareness until years later.
Gameboy Advance - it was rather cheap at launch, I liked the graphics and found the concept of the 16bit consoles reduced to portability by tech advancements fascinating, Castlevania: Circle of the Moon sounded fab with its mix of platforming exploration and RPG character systems, and Kuru kuru kururin was sufficiently odd to appeal strongly to me. I remember playing a lot of Konami Crazy Racers and F Zero at launch too.
Gamecube - after weeks of internal debate I purchased an imported American 'Cube for Rogue Squadron II: Rogue Leader, with Monkey Ball and Luigi's Mansion as strong secondary interests. This is the last console where I remember being absolutely stunned by how big of a leap the graphics were; things like the environmental interactions with Samus' visor in Metroid Prime floored me, and I swear Rogue Leader looked exactly like the film. I loved this odd little console and wish companies would make more effort to bring the library in from the cold. The £/$ exchange rate was heavily in our favour back then so I got my games cheaper, earlier, and without the frequently bad PAL conversions. Good times.
PS2 - Kingdom Hearts. You can have Donald toast your enemies with fireballs, while meeting characters from FFVII and FFVIII? Sold. I requested system and game for my next birthday. I was surprised to discover my PS2 gradually usurped the Gamecube as my favourite that generation. What a library for the RPG and action-adventure gamer!
Xbox - Knights of the Old Republic. I was deeply unhappy when Microsoft splashed the cash and 'stole' this from PC. I'd been following it avidly since the day it was first revealed in PC Gamer UK. I waited and waited for that PC release which had no date and never seemed to happen. Then a nearby supermarket decided to clear its gaming section and I encountered a cut-price system and discounted copy of KOTOR; it felt like destiny. Later I played KOTORII, Jade Empire, Ninja Gaiden Black, and some others which leave me with a fond feeling towards the console despite that grudging start.
Wii - Twilight Princess thanks to the lasting power of the N64 Zeldas, but also the hype around the console and the fact I lucked into getting a preorder for launch by virtue of having a day off when Amazon got extra stock. I remember hooking the system up, and the sinking feeling that I might have made a mistake. I didn't like the controls. At all. I started Zelda. I didn't like the slow, verbose intro, and hated the controls. I went to ultra-hype to "I'm ... I'm going to play something else now" in the space of 2 hours. I never did fall in love with the Wii, despite eventually finding some games which I enjoyed without reservations. Mostly Metroid Prime 3 and Metroid Prime Trilogy.
360 - Blue Dragon. That's what I purchased with it and I liked it a lot despite the blah cast. I also had my eye on Lost Odyssey, Oblivion, and atmospheric older titles like Condemned. For a few years this thing was amazing and I played so many games on it. Then kinect arrived, marketing perceptions shifted, and everyone ignored my market segment to focus on the casual, multiplayer, and dudebro markets. I went from having everything to play to nothing, right at the point the PS3 finally found its feet. Took Xbox years to become relevant again.
PS3 - freak circumstances. A refund on a credit card went odd and double-credited, and the card company would not believe they'd made a mistake. The money must be spent immediately as it's against the terms and conditions to be in credit, they insisted. The already limited backwards compatibility of the EU model was about to be stripped out, and it was the only useful thing of the right value which I could think of to buy. I used it to play my PS2 library until Demon's Souls became a thing, at which point I imported a US copy as we still had no publisher here. It took the console a long time to sort itself out but it got there in its final years, and they were good years indeed.
Wii U - Monster Hunter. I'd been trying to get into the series for ages and couldn't get on with them due to tech and control factors. A HD version with a normal controller? That's literally what I kept wishing for. They even made a convenient official bundle for me. The game was everything I'd hoped for. I liked this system better than the Wii despite the flaws and droughts.
DS - Phoenix Wright: Ace Attorney and the Lite redesign. One of my colleagues let me try his original model DS one lunchbreak, and I found the system intriguing if ugly. I saw a write-up of Phoenix Wright shortly after; a combination of the point and click games I'd loved in my childhood and an excellent translation, it was all but designed to capture my attention. At that time I got promoted at work, and took a trip to the nearby Game to buy a handsome black Lite and copy of the game several days later. It was a wise decision: this little thing had so many good and great games I still have a sizeable number left to play today.
PSP - Locoroco and Patapon. Another "I am flush with cash thanks to my promotion" purchase. I liked a lot of the library, especially the quirky stuff and JRPGs, but never did like the hardware itself.
3DS - Tales of the Abyss, Tom Clancy's Shadow Wars. The former never came out in Europe on PS2 and I'd heard about how fantastic it was for years. As a JRPG fan I had to get it. Immediately. The Tom Clancy was purely due to it being a solid turn-based tactics game by Mr Gallop of X-COM fame. While not quite the library powerhouse that is the DS, I still own a drawer full of games which I want to play.
Vita - Persona 4 Golden, PSP games on a better screen and form factor, and it'll definitely have a lot more quality JRPGs and stuff just like the PSP, right?? My main memory of this one is "That looks interesti - no, it's boobs again. Pass." This might be the most disappointing console I've owned purely thanks to the way otaku-baiting poisoned so much of the well. Parts of P4G were already pushing hard on the limits of what I'd eye-roll through.
PS4 - I can't remember. I got it a few months after my father died from a lengthy illness so perhaps it was more of a reminder that I must look forwards and try to resume my life. Great library once it got going.
One X - backwards compatibility. I like to revisit my games, and that PS360 generation has a lot of favourites. Sony didn't care; Microsoft did, and the X enhancement stuff was revealed right around the time I was experiencing a run of faulty old controllers. I played my original copy of KOTOR on it first as I liked the symmetry that gave with my original xbox. Game pass has given the console a much bigger role than I originally expected.
Switch - a mix of sustained proof of concept, the upcoming games slate, the fact it had become easily available, an improved version of Breath of the Wild, and the need to name a gift to a mother who felt she'd spent one year too many with the book lists. This might be Nintendo's best console and own-brand library for my money.