I'm 39 from the US, and my early consoles were:
1. Mattel Intellivision II
Dad bought this for the family with the ulterior motive of getting us interested in technology. My sister and I took to it immediately and it quickly became the main focus of my childhood attention, weird numpad + disk controller or not.
2. Mattel Intellivision System III
A replacement console for the family, won via some Kool Aid/Toys R Us sweepstakes because life was good in the 80s. Did expand our horizons a bit with a 2600 converter add-on, which revealed the wonders of Pitfall.
3. NES
Bought under the guise that it was for the whole family, but here's where it quickly became clear that I was the game-obsessed weirdo of the family. Jumped in a few years well after the launch, but at least that meant that I got to avoid the awkward Black Box days. As all my friends also had NESes, I'd say this was my first exposure to gaming as a community concern.
4. 386 PC
Dad again attempts to course-correct, nudging more towards tech and computers over just games games games, and brings home an amber monochrome monstrosity. I quickly learned how to bop around in DOS if it meant I got to play some games, even if they were mostly educational titles.
5. 486 PC
Dad brings home another work computer, but finally with color! A mouse! Speakers! A CD-ROM! Windows! Truly the good life. Got to see gaming from a different and more esoteric view, with stuff like X-Com and Ultima Underworld, as well as stumbling around some local BBSes for the first time. For as much as I feel like my dad's mission of getting me pointed towards a career in tech got waylaid by my fanaticism for games, I will have to credit this time in my life for my current career, after having to manually configure IRQs for SoundBlaster and such helping me get comfortable tinkering with computers.
6. SNES
Again, bought for the "family" a few years after launch, just in time for Street Fighter 2. There was the standard parental lament common for this time, "why do you need a new Nintendo, you're still playing the old one?", strange to consider now days that iterations of technology weren't always the established pattern. I had played RPGs before this, but here's where I went completely into the genre, body and soul. Enough to have opinions about the characters of 7th Saga.
7. Game Boy
Got it from some sort of playground trade? Didn't make the hugest impact on me, despite my affinity later in life for handheld gaming.
8. PlayStation
The last "family" console, but this time I could introduce my younger brothers to the fun. The pattern continued, we got it a bit after launch, this time spurred on by FF7. Even managed to get dad to play Gran Turismo or Tiger Woods every now and then.