Enemy Within is a solid expansion to an excellent game, with options like MECs, medals and gene mods that make you want to stomp aliens all over again in exciting new ways. The first two thirds of the campaign are definitely improved, but EW doesn't solve the problem of slogging through the endgame.
The story is moved forward, and the quick time events and character development make you wish you could play the concluding episode right now. So, in essence, this episode does its job quite well, I just wish it had more internal resolution.
The last episode of the series completes the arc of Bigby's investigation, and you'll be able to exact some final judgment on the perpetrators, but the resolution stumbles a bit after a spectacular climactic action scene. The whole series is excellent, and the conclusion may make you want to replay it to figure some stuff out you might have missed.
As an open world game set in Middle-earth, Shadow of Mordor delivers unique emergent gameplay, finely-tuned combat mechanics and a story which avoids typical fantasy fare. While the main storyline can be finished relatively quickly, there is a lot of content in Mordor for you to pursue however you like.
An overall solid turn-based strategy game that suffers from information overload resulting in analysis paralysis for the player, Beyond Earth has a few really interesting systems but ultimately doesn't transcend those mechanics into something unique or awe-inspiring.