ShadowAngel.207: - Better Graphics (Obvious)
- Better Sound (XCom 2: WOTC adds a remix of the X-Com: Ufo Defense Soundtrack that is kickass)
- Streamlined UI that doesn't give you a migraine
- Multiplayer. Sadly, rather dead and Take2 C&D'd the developers of Tactical Coop which was a ton of fun but with friends the PvP is great actually.
- WotC added new gametypes like the Challenge Mode that is all about your tactical skills (with online leaderboards to compare how good you are)
The biggest reasons: MODS
Long War 2 may very well be the greatest singleplayer mod ever created. It turns the game inside out and adds so much stuff that it nearly feels like a completely new game by changing the entire approach (you really start as some ill-equiped noob-like resistance movement)
And all the other mods. From the hilarious voice packs (everything from TV/Movies/Video Games imaginable) to drastic game changing stuff like the awesome MOCX-Initiviative mods, to new enemies, new weapons, new levels and gameplay changing stuff or mods that add QoL things ("Evac All" is basically mandatory) there is so much that you never get tired of the game.
There are some really insane enemy types that challenge you tremendously, like the Omega Berserker, the Armored PSI Viper and other opponents, so even if the base game might feel easy (altough it really isn't, hardest difficulty is very challenging), you can just ramp up the difficulty even more to levels were even X-Com: Terror from the Deep is a walk in the park with god mode enabled in comparison.
I can't really go back to the old X-Com games anymore after experience this one with all the mods and possibilities, it just feels better and is a ton more fun in every way imaginable.
Hmm . I guess you are writting about the Steam version of the game .
