All Games » NES/Famicom » Alien Syndrome

Alien Syndrome
Console icon NES/Famicom

Game icon

Developer

SIMS | Sanritsu

Publisher

Tengen

Genre

Run & Gun

Released

1988

Title screenshot
In-game screenshot
Title screenshot Ingame screenshot

Achievements

Author: valkyrov (17)

There are 17 achievements worth 205 (547) points.

Sort: Normal ^ - Won By - Points - Title - Type 

  • Accumulate 5 lives

    189 (117) of 994 – 19.01%

    11.77% of players have earned the achievement in hardcore mode
    19.01% of players have earned the achievement in softcore mode

  • Get a score of 50,000

    481 (324) of 994 – 48.39%

    32.60% of players have earned the achievement in hardcore mode
    48.39% of players have earned the achievement in softcore mode
  • Alien Killer

    (10) (15)

    Get a score of 100,000

    335 (242) of 994 – 33.70%

    24.35% of players have earned the achievement in hardcore mode
    33.70% of players have earned the achievement in softcore mode

  • Get a score of 200,000

    203 (144) of 994 – 20.42%

    14.49% of players have earned the achievement in hardcore mode
    20.42% of players have earned the achievement in softcore mode

  • Save all prisoners on stage 1 and get to the exit

    955 (538) of 994 – 96.08%

    54.12% of players have earned the achievement in hardcore mode
    96.08% of players have earned the achievement in softcore mode
  • Hugger

    (5) (6)

    Beat 1st boss

    535 (335) of 994 – 53.82%

    33.70% of players have earned the achievement in hardcore mode
    53.82% of players have earned the achievement in softcore mode
  • Warming Up

    (5) (7)

    Save all prisoners on stage 2 and get to the exit

    392 (268) of 994 – 39.44%

    26.96% of players have earned the achievement in hardcore mode
    39.44% of players have earned the achievement in softcore mode
  • Asophy

    (5) (9)

    Beat 2nd boss

    279 (184) of 994 – 28.07%

    18.51% of players have earned the achievement in hardcore mode
    28.07% of players have earned the achievement in softcore mode

  • Save all prisoners on stage 3 and get to the exit

    261 (186) of 994 – 26.26%

    18.71% of players have earned the achievement in hardcore mode
    26.26% of players have earned the achievement in softcore mode
  • Tacady

    (10) (21)

    Beat 3rd boss

    213 (148) of 994 – 21.43%

    14.89% of players have earned the achievement in hardcore mode
    21.43% of players have earned the achievement in softcore mode

  • Save all prisoners on stage 4 and get to the exit

    160 (102) of 994 – 16.10%

    10.26% of players have earned the achievement in hardcore mode
    16.10% of players have earned the achievement in softcore mode
  • Halpha

    (10) (29)

    Beat 4th boss

    155 (97) of 994 – 15.59%

    9.76% of players have earned the achievement in hardcore mode
    15.59% of players have earned the achievement in softcore mode

  • Save all prisoners on stage 5 and get to the exit

    141 (84) of 994 – 14.19%

    8.45% of players have earned the achievement in hardcore mode
    14.19% of players have earned the achievement in softcore mode
  • Teetsie

    (10) (33)

    Beat 5th boss

    140 (83) of 994 – 14.08%

    8.35% of players have earned the achievement in hardcore mode
    14.08% of players have earned the achievement in softcore mode

  • Save all prisoners on stage 6 and get to the exit

    139 (82) of 994 – 13.98%

    8.25% of players have earned the achievement in hardcore mode
    13.98% of players have earned the achievement in softcore mode
  • Minemor

    (25) (87)

    Beat 6th boss

    135 (79) of 994 – 13.58%

    7.95% of players have earned the achievement in hardcore mode
    13.58% of players have earned the achievement in softcore mode
  • King Core

    (25) (87)

    Beat the game

    135 (79) of 994 – 13.58%

    7.95% of players have earned the achievement in hardcore mode
    13.58% of players have earned the achievement in softcore mode

Recent Players

kytewalker123 kytewalker123

19 Jun 2025, 2:48am

Playing Alien Syndrome

skipThings skipThings

18 Jun 2025, 7:21pm

Playing Alien Syndrome

Odenyan Odenyan

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Playing Alien Syndrome

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Playing Alien Syndrome

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Playing Alien Syndrome

prismfighter prismfighter

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Playing Alien Syndrome

tri4c3 tri4c3

16 Jun 2025, 10:54pm

Playing Alien Syndrome

ichiokada ichiokada

16 Jun 2025, 3:36pm

Playing Alien Syndrome

Donley Donley

16 Jun 2025, 6:58am

Playing Alien Syndrome

Comments:
valkyrov 4 Mar 2017 22:19
Everything should be in working order here. Let me know if you have issues. Good luck, this is a tough one.
ENZYME1
ENZYME1 5 Mar 2017 07:07
Nice to see this up. Didn't even know this existed on the NES. Hopefully, we will eventually get support for the original SMS titles.
sigma62 6 Mar 2017 19:28
Thanks Valkyrov.Excellent set :)
sireture 14 Mar 2017 18:24
Yes, aMafy is correct. The correct rom is (J). Everything triggers, now.
valkyrov 19 Mar 2017 22:52
I used the no-intro rom.
soulrider25 23 Mar 2017 01:52
ok never mind, I used (USA)(Unl)
KudosForce 5 Feb 2018 12:35
The (USA)(Unl) rom works, but it has issues with achievements popping up (in my case, the ones for stage 3 got triggered long before I could beat it), so the (J) rom is recommended for the best results.
ItsReallyLynx 28 Dec 2018 15:08
Dope set!
PaddyW 15 Feb 2025 21:54
Yeah, the (Unl)-rom acts weird, it shouldn't be supported anymore. Achievement-windows pop up at the wrong time, but they aren't registered in the profile. (J) works fine
skipThings 18 Jun 2025 20:05
Love that "NES-Nasty" here, all the enemies and bosses are so icky