Looks interesting. I'm just not sure how often I would use it.
Arcade games were something I loved back in the '80s and '90s; these days I hardly play 'em. Maybe it's because I'm getting older and the adrenaline-fueled button-mashers focused on slashing and shooting don't quite hold the appeal they once did? Maybe it's because most games these days save "progress" of some sort and it's nice to revisit knowing you're not starting at the ground floor?
They do have some Amiga and other games on here...saw some LucasArts games (ex: Monkey Island), but would probably want to review the full games list to make sure I'd get use out of it.
I am a little bit concerned about how "lifetime" the lifetime pass would be. It's a streaming service and a one-time fee means that some day the funds could dry up and they shut it down. I'd almost rather pay $.25-$.50 per "session" from a set of credits that I'd need to renew at some point...put $25 in, slowly use it up...rather than pay $99, probably never use all that.