Invisible, Inc. is super, super hard in a really good way. Though the difficulty can be demanding, it's also highly customizable, which is probably the best way new and especially young players should approach this title. By moving around, making things easier, and opting to enable more rewinds, you'll learn how to best evade detection and what to do when spotted -- because that's where and how the challenge really comes in. Each character has different special skills (Internationale can sap power from devices remotely; Banks is great at breaking codes) that can make or break the way you'll approach each outing -- but anytime you're spotted, the game will deflate around you. More and more soldiers will be dispatched to take you out, more security cameras will be flipped on, and you'll find yourself in a corner. Anytime you're cornered or spotted, you have only one turn to get out of sight; otherwise you get gunned down, and it's up to the surviving spies to continue on.
If that sounds tense, it is. Extremely. But it's also what makes Invisible, Inc. so fun, rewarding, and worth sticking with. It will take a while for your skill level to catch up, but as in chess, it's a game that will rise to your abilities. That the challenge also is highly customizable is another gimme, so if you don't feel like being slaughtered and prefer instead to observe how the game works and how to learn, it's a great way to spend a bit of down time when you don't want a full campaign. All in all, this is a great and brutal game worthy of your attention.