Once you download a mod, the same start screen allows you to select which mods you want to have active, and which ones you don't, similar to the addon selection screen of World of Warcraft. And already there are hundreds of mods you can find there. On the very first screen of XCOM 2 you can instead of pressing the 'play' button go to the Steam Workshop instead.
In XCOM 2 it turns out that cheats are now called 'mods' and are very well integrated in the game interface. In the previous XCOM game I solved the problem with a cheat program which gave me more money at the start. But for the battles I like them to be a bit more challenging. That isn't exactly what I want, I don't like if the resources in a game are so tight that there is only one possible sequence of decisions which doesn't lead to disaster. While XCOM 2 lets you select a difficulty level, the choice isn't very detailed, and if you want harder battles, you also get a harder resource management game with it. The first couple of games all ended in failure because I had taken wrong economic decisions in the 'outer' game that connects the various battles. I've been playing a lot of XCOM 2 since it came out.
