Moon Alien Part 2

Screenshots1 / 2

The title screen displays 'MOON ALIEN PART 2' in red pixelated text at the top center, with 'TOP' and 'HIGH SCORE' indicators in the upper left corner. Below the title, large red and white block letters spell out the game name across the black background. At the bottom left, cyan-colored text reads 'CREDIT 0', and a small white pixel sprite appears near the center-bottom of the screen. The overall composition uses a stark black background with red and white blocky pixel graphics typical of early 1980s arcade aesthetics.

Moon Alien Part 2

月球异星人2

4.7 (3.8K)
Arcade Action 535 plays

Moon Alien Part 2 is an action arcade game released by Namco and Nichibutsu in 1980. Players control a character defending against waves of descending aliens, using directional controls and fire buttons to shoot projectiles and eliminate threats. The gameplay features multiple waves of increasing difficulty, with aliens attacking from the top of the screen in formation patterns. Players must avoid enemy fire while positioning strategically to eliminate all invaders before advancing to the next wave. The game uses simple but responsive controls and a straightforward level structure that repeats with escalating challenge.

Developer
Released
Platform
Arcade
Genre
Action
Rating
4.7 / 5 (3.8K)
Last updated

About Moon Alien Part 2

Moon Alien Part 2 is a 1980 arcade fixed-shooter released under a collaborative arrangement between Namco and Nichibutsu, arriving at a moment when the arcade market was in the grip of the space-shooter craze ignited by Taito's Space Invaders (1978) and further intensified by Namco's own Galaxian (1979). By 1980, players and operators alike had high expectations for alien-shooting cabinet games: smooth sprite movement, escalating difficulty, and enough visual novelty to justify another coin drop. Moon Alien Part 2 entered this crowded field as a direct competitor to those established titles, borrowing the core fixed-shooter template — a player-controlled cannon at the bottom of the screen, waves of descending or swooping alien enemies above — while introducing its own formation patterns and attack behaviors to differentiate itself on the arcade floor. The "Part 2" designation in the title implies a lineage or sequel relationship, though the game functions as a standalone experience and does not require familiarity with any predecessor to be understood or enjoyed. Controls follow the genre standard of the era: a joystick or directional buttons to move the player's ship horizontally across the bottom of the screen, and a single fire button to launch projectiles upward into the alien formations. The player's cannon can typically fire one shot at a time, meaning timing and positioning are critical — a missed shot forces a brief wait before the next can be launched, a design choice that rewards deliberate aim over frantic button-mashing. Enemy formations descend in organized rows and columns reminiscent of the Galaxian style, with individual aliens periodically breaking from formation to execute diving attack runs directly at the player's position. These dive-bombing enemies represent the primary threat, as they move unpredictably and can catch a stationary player off guard. Destroying enemies in formation earns points, while picking off diving enemies mid-swoop often yields bonus scoring opportunities, encouraging aggressive and skilled play. The game loops through its stages with increasing enemy speed and aggression, a standard arcade escalation mechanic designed to ensure that no credit lasts indefinitely and that skilled players are continuously challenged. Visually, Moon Alien Part 2 uses the colorful sprite technology characteristic of late-1970s and early-1980s arcade hardware, with alien sprites rendered in multiple colors against a star-field background — a step beyond the monochrome or overlay-tinted visuals of Space Invaders. The sound design employs the synthesized electronic tones and explosion effects common to the era, providing satisfying audio feedback for hits and deaths. In its era, the game occupied a functional niche on arcade floors alongside dozens of similar shooters, appealing to players who had mastered Galaxian and were hungry for fresh formation patterns and enemy behaviors. While it did not achieve the landmark cultural status of its most famous contemporaries, it represents a competent and earnest entry in the golden age of fixed shooters, reflecting the rapid iteration and experimentation that defined arcade game development at the dawn of the 1980s.

Pro tips

  • Prioritize shooting diving enemies over stationary formation enemies — they move toward you and are the most immediate threat to your ship.
  • Stay near the center of the screen when possible so you have maximum lateral room to dodge incoming dive-bomb attacks in either direction.
  • Learn the timing of your single-shot reload: fire only when you have a clear line to a target to avoid wasting your brief window between shots.
  • Focus fire on the edges of enemy formations first to reduce the number of enemies that can break off and dive simultaneously.
  • Watch for patterns in enemy dive sequences — the same formation types tend to send attackers in predictable orders, letting you pre-position your cannon.

Moon Alien Part 2 Controls — Arcade Keyboard Keys

Default keyboard bindings for Moon Alien Part 2 on our in-browser Arcade emulator. Plug in a USB or Bluetooth gamepad to auto-detect mappings, or rebind any key from the emulator settings menu.

Keyboard Console button Typical use
Joystick Up Move up
Joystick Down Move down
Joystick Left Move left
Joystick Right Move right
X Button 1 Primary action (jump / confirm)
Z Button 2 Secondary action (attack / cancel)
S Button 3 Tertiary action
A Button 4 Quaternary action
Q Button 5 Fifth button
W Button 6 Sixth button
5 Insert Coin Insert coin
1 1P Start Start / Pause

Coin and Start are convention "Insert Coin: 5" and "1P Start: 1". Some arcade boards expect specific button mappings — check the in-game prompts on coin-up.

Rebind any key from the EmulatorJS in-game settings menu (gear icon → Controls). A connected gamepad auto-maps to the same buttons.

Moon Alien Part 2 Longplay & Gameplay Videos

Watch a full playthrough of Moon Alien Part 2 on Arcade before you dive in — recommended for getting a feel for the game's pacing, story beats, and difficulty curve.

Watch longplay on YouTube

"Moon Alien Part 2" Arcade longplay 1980

External references

Frequently Asked Questions

When was Moon Alien Part 2 released?

Moon Alien Part 2 was released in 1980 for the Arcade.

Who developed Moon Alien Part 2?

Moon Alien Part 2 was developed by Namco / Nichibutsu, available to play in your browser on RetroGameSpace.

What type of game is Moon Alien Part 2?

Moon Alien Part 2 is a Action game for the Arcade, playable instantly in your browser — no downloads, no installs.

How can I play Moon Alien Part 2 for free?

Open this page and click "Play Now" — Moon Alien Part 2 runs free in your browser via WebAssembly emulation. No account, no payment, no installer.

Do I need to download anything to play Moon Alien Part 2 in the browser?

No. Moon Alien Part 2 streams from a public archive into a browser-side Arcade emulator. Nothing is installed on your computer.

Can I save my progress in Moon Alien Part 2?

Yes. Save states are stored in your browser (IndexedDB) per game, and you can also use any in-game save the original Arcade cartridge supported.

Does Moon Alien Part 2 work on mobile devices?

Yes — the Arcade emulator runs on iOS Safari and Android Chrome. Touch controls overlay the game; landscape mode is recommended.

Is it legal to play Moon Alien Part 2 this way?

RetroGameSpace is a transient caching reverse-proxy and does not host first-party copies of Moon Alien Part 2. Game files are fetched on demand from publicly-accessible archives. You are responsible for compliance with your local laws and the bring-your-own-ROM principle.

How difficult is Moon Alien Part 2 for newcomers?

The game is moderately challenging for newcomers. The single-shot mechanic punishes missed fire, and dive-bombing enemies accelerate quickly. Players familiar with Galaxian or Space Invaders will adapt faster, but the escalating speed in later loops can overwhelm beginners.

What is the best starting strategy?

Begin by clearing enemies from the outer columns of the formation to reduce the pool of potential dive-bombers. Keep moving laterally in small steps rather than large sweeps, and always have your cannon positioned to intercept the most likely dive path.

Is Moon Alien Part 2 worth playing today?

For fans of golden-age fixed shooters and arcade history enthusiasts, yes. It offers a snapshot of the intense competition and rapid design iteration of 1980 arcade development. Casual players may find it repetitive compared to later genre entries, but it retains the tight, immediate tension of its era.

What is a common mistake new players make?

New players often stay stationary and fire rapidly without accounting for the single-shot reload, wasting time with no projectile in flight. Constantly moving and timing each shot deliberately is far more effective than trying to spray fire across the screen.

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