I'm actually one of the few people who will agree with you that Invisible War is a bit underrated. I've never owned it myself, but I've played it with a buddy a lot back in the day.

It's not absolutely terrible like people say.

Deus Ex is a great game, though. It's so interesting in the sense that Deus Ex doesn't excell in a lot of things, but it does such a plethora of things really well that it holds up.

It has this charm that's not rivaled by many games; the dark and gritty world where the sun never shines, everything is ugly and hopeless.

Love it.