@emicrania There aren't many remarkable cyberpunk games out there. The coolest one might be I Have No Mouth And I Must Scream if it doesn't look too old for you. Then some more popular stuff follows, like: shadowrun, syndicate, deus ex games, system shock 2, Beneath A Steel Sky, Primordia, Burn Cycle, snatcher, metal gear solid, uplink and something i forgot because i don't care enough.
Looking at the current times you can get or keep an eye on stuff like mirror's edge 2, satellite reign, shadowrun returns, Gunpoint, Quadrilateral Cowboy, a random metal gear game, a deus ex game you won't find on any decent gaming platform, prey 2, neocron 3, Gemini Rue, Cypher and obviously cyb 2077 which is basically the most promising one.
That's a bagaglio of cyberpunk games for you.
You may also go atom/dieselpunk with fallouts or bio/steampunk with the first Bioshock which is a system shock clone.
or go pew pew with F.E.A.R. which has Akira replaced with Sadako
don't know about the longest journey and dreamfall chapters though, never played them