It's very simple yet very fun, it's very similar to cluedo. I found the pins and the notes not very useful, outside of roleplaying, I simply used the maps, the markers and the CCTV and the Log system to figure out who, my first run was pretty lucky, I did spent it most of the time figuring out who the game worked and I tracked the position of everyone during all the five hours, but once I got it it was pretty obvious who it was because there was no other possible candidate, but then the following runs weren't as lucky and I had the ?:00 which made it more interesting, love that randomization, you can get lucky and have it super easy or have something more challenging yet not very difficult.
I'd love if you could copy and paste markers, it got a bit tiresome clicking marker and selecting the name I wanted, also if they appeared at the center of the screen view, they appeared at the left side which was a little annoying, but no biggie.
I found the best strat it just forgetting about everyone else, just track the spy during all the hours, then use the CCTV to see the rooms the spy was in at each time and see who was there.
One bug I've found is that the music seems to reset everytime I click, and the volume slider doesn't seem to really work, like at the start I set the slider to 0, and the music doesn't plays, as you'd expect, but eventually the music does start to sound, despite the slider being at 0.
Anyways. really fun game, like, I couldn't stop playing it.