When comparing XCOM 2 vs Factorio, the Slant community recommends Factorio for most people. In the question“What are the best singleplayer games on Steam?” Factorio is ranked 4th while XCOM 2 is ranked 25th. The most important reason people chose Factorio is:
With proper planning, users can "code" together very precise ways to create all the things needed for the game, some in very inventive ways that can differ quite a bit. This allows for tons of replayability.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro It's fun to manage your squad
One of the main aspects of XCOM 2 is preparing your squad for each mission. You need to consider the terrain, objective, and enemy types. Based on these you'll select the appropriate soldiers, weapons, and gadgets. A lot of the missions have some leeway, so you'll be able to form a squad that fits your playstyle. It can either be a group of stealthy rangers, running in with machetes to surprise the enemy. Or it can be a group sharpshooters, allowing you to systematically clear the area from afar with sniper rifles.
After each successful mission/kill your soldiers will earn experience. With enough experience you'll be able to promote them and earn learn new skills. You can also research new weapons and build them. A lot of it comes down to looting alien technology and reverse engineering it back at the base.
All these things add up and it's really exciting watching your soldiers grow into unstoppable killing machines.
Pro Makes you feel more for your characters than most character driven games
One of the more fun parts about this game is managing your squad. You can customize the looks, voices, and even names of your soldiers. As you take your soldiers on missions you'll get attached to them. This will create a lot of tense moments when your soldiers are about to die and you desperately try to save them.
If you decide to input the names of your friends or family, multiply the tension by ten.
Pro Excellent suspense
Throughout the campaign you'll always be running against the clock. You have a limited window of time to save humanity before the aliens take over completely. Successful missions only set them back slightly. Unsuccessful missions set you back significantly. It always feels like you're in an uphill struggle and failing means the end. It always feels like you're not gaining an advantage and the aliens have something else in store. This is reinforced in the missions. You never know what type of aliens there will be or what their reinforcements will bring. Encountering new species makes you fear for the well-being of your squad. It's rare for a game to keep you feeling like this.
Pro Endless solutions
With proper planning, users can "code" together very precise ways to create all the things needed for the game, some in very inventive ways that can differ quite a bit. This allows for tons of replayability.
Pro Under active development
The game is still in Alpha which means endless future possibilities.
Pro Massive and infinite procedurally generated world
The playing world is as large as you want to explore, it automatically generates it as you explore more areas.
Pro Cooperative or PvP building
Factorio also supports multiplayer, allowing many players to cooperate and assist each other, or work against each other in PvP. By default, multiplayer games run the CO-OP freeplay scenario where all players work together to launch a rocket with a satellite into space.
Pro Charming old school graphics
While not the most technically advanced graphics the look of the game is much like a game from the 90s but seeing it in action when an assembly line starts moving there is an impressiveness to it that suits the game quite well.
Cons
Con Demanding on hardware
Will not run on low-end graphics cards like the GeForce GT 740M or the HD Graphics 4600 / 5600.
Con Complaints about the new launcher
Sadly the Steam rating has dropped because of the new launcher, problems can be solved however: XCOM 2 How to Bypass the 2k Launcher without External Files or Configuration Guide.
Con Steep learning curve
XCOM 2 is not just about managing a squad of soldiers, you also have to manage your base and operations on a global scale. This includes managing your resources, identifying which missions you should prioritize, and allocating research for new technologies. It might take a while to learn everything needed to fully enjoy this game, especially on higher difficulties.
Con Can become rather repetitive
There's really little payoff for being able to build really long chains of automation, it usually results in being able to open a new tech tree which allows the player to continue the process of building automation chains ad infinitum, which, admittedly can become rather boring after a while.
Con Still in Early Access
The game is still in Early Access which means there will be bugs as well as missing features.