I got this for my 12th birthday and it took me ages to beat it! I liked the fact it had real voice samples - when you died it says "Ohhhh god". This is definitely a hard game to beat you will spend many hours trying to learn all the mazes in this game.
Despite its hardness I suggest you play it, and even try the arcade version.
Alien Syndrome Trivia
Alien Syndrome Cheats, Hints, Tips and Walkthroughs
Temporary invincibility
Wait until 272, 267, 232, 222, 171, 161, 131, or 121 is displayed on the counter. Then collect the boxes with the question marks from the ships to get temporary invicibility.
Box Text
USA
Sega's super arcade smash hit comes to life...on your Sega System! A mysterious alien space fleet has invaded human occupied space. Called the Alien Syndrome™, they are the deadliest creatures mankind has ever encountered. The Alien Syndrome shoots first...and asks no questions! A battalion of your friends attacks the alien fleet. But they are captured and held hostage. Earth Command sends one soldier to get them back...You! You're RICKY, Earth Command Trooper. When it comes to deep space combat, you are the best. Armed only with a combat rifle, you must infiltrate each alien ship, rescue the hostages and escape...before a time bomb vaporizes the ship into cosmic debris. The odds...and the clock...are against you. The aliens can appear anywhere...at any time. So shoot fast and straight. The hostages are depending on you!
EUROPE
English
They've come from beyond the galaxy and taken your friends hostage. You're an Earth Command Trooper. You're going to get them back!
German
Sie sind von außerhalb der Milchstraße gekommen und haben ihre Freunde gefangengenommen. Sie selbst gehören zur Erdkommandotruppe. Sie werden Ihre Freunde wieder zurückholen!
French
Ils sont venus des confins de la galaxie pour prendre vos amis en otage. Vous êtes un commandeur de troupes terrestres. Vous allez les récupérer!
Spanish
Han llegado de más allá de las galaxias y han tomado a sus amigos como rehenes. Usted es un Soldado del Comando de Tierra. ¡Usted va a rescatarles!
Italian
Sono venuti da oltre la galassia e hanno preso in ostaggio i tuoi amici. Sei un Guerriero del Comando Terra. Devi andare a liberarli.
JAPAN
na
BRAZIL
O ano: 2089. Misteriosas criaturas vindas de outra galáxia estão invadindo o nosso planeta ! Elas são diferentes de tudo o que você já viu, e decididamente não estão brincando: trouxeram naves do tamanho de uma cidade inteira ! O mundo está em pânico. Os melhores soldados da Tropa de Comando da Terra foram enviados para controlar a situação, mas veja o que aconteceu: eles foram levados como reféns !! Agora todos estão à procura de voluntários para irem em uma missão de resgate. O quê ? Você aceita essa missão ? Então fique bem atento, pois os aliens têm uma grande vantagem. Eles podem aparecer a qualquer hora... em qualquer lugar !