In terms of fappability, the game is pretty great. Not only does the sex scenes seem to have moderate-high quality to it, but it's also animated.
However, the 'gameplay' has serious issues which I will describe as follows:
The objective is to earn enough money to pay off a debt. You earn like what 10K per day automatically, plus 3K per person you let through. Issue is that you only have 5 people max you can let through.
Inspired by Papers Please!, the game attempts to 'spice' things up by giving you some info look at such as asking their intentions, and 'investigating' their passport which takes 2/10 action slots you have (note accepting/rejecting takes 2/10 action slots as well). You can also interrogate them but all this does is allow you to get groped for money, or you can prostitute yourself to them for money for a minute or two.
The game also has "international criminals" that you must watch out for and i never actually let any through, but if you detain them nothing notable happens. It's a let down.
If u want a few H scenes for fapping go ahead and play a bit but The Imperial Gatekeeper is far superior gameplay wise in terms of actually engaging the 3 neurons your brain has whilst being horny.