Play X-COM: Apocalypse Online

X-COM: Apocalypse came out in 1997, developed by MicroProse for MS-DOS. It was part of that wave of deep, complex strategy games that really pushed what PCs could handle at the time, both in terms of graphics and gameplay systems. You don't just fight aliens; you manage a whole counter-alien agency in a single, living city.

You control a squad of soldiers, scientists, and engineers, balancing research, manufacturing, and city diplomacy while fending off alien incursions and hostile human factions. The game is known for its real-time or turn-based tactical combat (player's choice), its persistent city map where events unfold simultaneously, and the need to manage relationships with competing corporations. The pacing is tense, and the difficulty is punishing; one wrong move can spiral into financial ruin or a squad wipe. It feels like trying to keep a fragile house of cards standing during a hurricane.

Each game uses different controls, most DOS games use the keyboard arrows. Some will use the mouse , "Alt" ,"Enter" and "Space bar".