It's an evolution of the mechanics: Original X-Coms: very simulationist. Reboot: Adds class mechanic thus reducing simulationism. (In both cases lategame is r

It's an evolution of the mechanics: Original X-Coms: very simulationist. Reboot: Adds class mechanic thus reducing simulationism. (In both cases lategame is rather easy). Chimera: Small set piece, probably inspired by the Mario game. Also characters like in Jagged Alliance. It takes a lot from other games, which suits some but not others.