Missile Command

Missile Command is a 1981 Atari 2600 game from Atari, Inc., originally released in arcades in 1980, catalogued here for 4 defining game mechanics.

Atari 26001981Originally Arcade 1980Complexity 18/1002D SidePopular

Missile Command is a 1980 shoot 'em up developed and published by Atari, Inc.; the Atari 2600 port was a flagship title. (via Wikipedia)

The genre Missile Command helped define

Point-defense shooter. aiming at empty space rather than at your own ship, defending cities you can never save for good.

Projectile SystemCombatPrimary player-versus-enemy interaction is firing and/or dodging discrete moving objects.
Lives SystemResourcePlayer has a finite number of attempts; losing all lives resets progress to a defined point or ends the game.
Wave SpawningSimulationEnemies appear in scripted or procedural groups at intervals; surviving each wave is the primary challenge loop.
Time PressureNarrativeA countdown timer or depleting resource creates urgency and forces prioritization of actions within a session.

Each mechanic links to how to build it in Godot, with the retro games that share it.