Here we go with the #7GamestToKnowMe, in no particular order:

• Sam & Max: Hit The Road (PC DOS, although I could pick almost any LucasFilm/LucasArts adventure!)
• Transport Tycoon (PC DOS, also TT Deluxe and OpenTTD by extension!)
• Final Fantasy VII (PlayStation)
• Pinball Fantasies (PC DOS, with internal speaker before we had a SoundBlaster at home)
• SD-Snatcher (MSX2)
• Factorio (PC Linux)
• Gran Turismo (PlayStation)

Some of these have ports, so I have noted down which platform I played on first. While my first computer was a #MSX we had PCs at home for the most of it. I've used Linux since 1998 and (re)played many games with emulators @scummvm, #DOSBox and #DOSEmu — they are wonderful projects and I am infinitely grateful for them.

Also, it's very hard to choose only seven games, so I wanted to put there a bit of every genre I enjoy or games that really caused an impression 

#7GamestToKnowMe

Turrican 2
The Chaos Engine
Doom II
Quake
Morrowind
Witcher 3
Hades