That’s what The Echo Project team are known for. If you really want to see some heavy stuff, not political but psychological and horror romance. I recommend this other 3 games. Just be careful since it really is heavy:
The Smoke Room: Supernatural/Psychological horror, romance. It hits hard if you are not careful. The project is still on development.
Echo: Psychological, horror. I have yet to try to play it, but this one is really heavy too. Make sure to prepare if you want to get into it. The project is finished.
Arches: Psychological horror, and mental illness. I recently finish this one is a Continuation of The Smoke Room… or even Echo. Just a hell of an emotional rollercoaster. Be prepared for anything on this one. The project is still on development.
Just be prepared because it can give you nightmares if you aren’t careful… I still see some of those things in the dark.