Either Japanese PS2 release. HD Edition is suitable (PS3/Japanese is best)
3
Monkey Island 2: LeChuck's Revenge
IBM PC version with MT-32 Audio. Best way to play today is ScummVM with mixed Midi SFX. Special edition in classic mode is fine (text too fast without voice
4
Doom
PC. Though the newest ports on everything are pretty good.
5
Grim Fandango
Obviously best on an old Win 98 machine and CRT monitor, but Remastered services on any modern hardware (tank controls are a must tho)
6
Batman: Arkham City
PS3 or PC. Return to Arkham is fiiiine ig if your only option. Would recommend x360 version on a newer Xbox over that if possible though.
7
Hitman World of Assassination
PC. Consoles are pretty much just as good I'm sure.
8
Final Fantasy VII
Japanese "International" PlayStation release. The switch versions alright.
9
Super Mario 64
Japanese Rumble Pack N64 version. 3D Collection/All-Stars is the best modern release. Switch Online is fine if that's not available to you.