Arcade

Alien Syndrome

Two players control two soldiers named Ricky and Mary, who must fight their way through large eight-way scrolling levels rescuing their comrades who are being held by aliens. After they have rescued a certain number of hostages the exit opens and they can pass through it in order to fight the end-of-level guardian. If this monstrosity is defeated, they move onto the next stage. As well as two player simultaneous gameplay, Alien Syndrome features pick-ups which assist the player including better weapons and maps of the current level.

Genre: Maze
Year: 1987
Developer: Sega
Publisher: Sega
Players: 2

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P2P Netplay available on compatible cores

Achievements

31 achievements · 298 total points

Pinky Beat Asophy
5 pts
And The Brain Beat Asophy without getting hit
10 pts
Brainiac Negotiator Rescue All Hostages in Round 1
5 pts
Brainiac Speedrunner Beat Asophy With More Than 100 Seconds Left
10 pts
Cursed Jellybeans Beat Hugger
5 pts
The Forbidden Flavor Beat Hugger without getting hit
10 pts
Flourish and Blotts Negotiator Rescue All Hostages in Round 2
5 pts
Flourish and Blotts Speedrunner Beat Hugger With More Than 100 Seconds Left
10 pts
Got Something In My Eye Beat Takapy
5 pts
Like a Bowl of Risketos Beat Takapy without getting hit
10 pts
Worms Negotiator Rescue All Hostages in Round 3
5 pts
Worms Speedrunner Beat Takapy With More Than 100 Seconds Left
10 pts
Rastafari Beat Minnow
5 pts
Minnow Is Wrecked Beat Minnow without getting hit
10 pts
Rastafari Negotiator Rescue All Hostages in Round 4
10 pts
Rastafari Speedrunner Beat Minnow With More Than 100 Seconds Left
10 pts
Spiteful Snake Beat Yocotie
5 pts
Like a Dragon Beat Yocotie without getting hit
10 pts
Reptile Negotiator Rescue All Hostages in Round 5
10 pts
Reptile Speedrunner Beat Yocotie With More Than 100 Seconds Left
10 pts
Crooked Potato Beat Minemor
5 pts
Peeled Potato Beat Minemor without getting hit
10 pts
Potato Negotiator Rescue All Hostages in Round 6
10 pts
Potato Speedrunner Beat Minemor With More Than 100 Seconds Left
25 pts
What a Weird Name for a Final Boss Beat Mr. Mimi
10 pts
Mimitos Meow Meow Beat Mr. Mimi without getting hit
25 pts
Mimitos Speedrunner Beat Mr. Mimi With More Than 100 Seconds Left
10 pts
Lousy Scorer Score 50k points on the first loop
3 pts
High Scorer Score 100k points on the first loop
5 pts
Bountiful Scorer Score 250k points on the first loop
10 pts
Speedrun Scorer Score 500k points on the first loop
25 pts

Alien Syndrome leaderboard

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Alien Syndrome frequently asked questions

How do I play Alien Syndrome online with a friend?

Alien Syndrome (Arcade) can be played online with friends using Etera's P2P netplay. Create a room in the launcher and invite your friend, who joins through the invite. Step by step:

Download the Etera launcher for Windows or Linux and create your account.
Ask your friend to do the same and add them to your friends list.
Pick the game in the library and create a netplay room.
Invite your friend: they accept the invite and join the room.
The launcher keeps dependencies on the same version for both players, avoiding desync.

How do I play Alien Syndrome on PC?

Download the Etera launcher (Windows or Linux), find Alien Syndrome in the Arcade library and click to download. The launcher handles the emulator and setup for you.

Does Alien Syndrome netplay lag?

Etera uses a direct P2P connection between players, which usually means low latency. Results depend on each player's internet quality.

Does Alien Syndrome have achievements?

Yes, Alien Syndrome has 31 achievements worth 298 points. Achievements are counted and saved to your history and the leaderboard for subscribers and during the trial period.

Can I play Alien Syndrome for free?

Yes. Every account gets a 5-day trial with premium features. After that, the free plan allows 3 new games per day and 1 netplay session per day. Premium raises those limits.

Play Alien Syndrome on Etera

Download the launcher for Windows or Linux, find this game in the library and play solo or with friends.