Journey to Silius

Journey to Sillius is a side-scrolling action game by Sunsoft released for the Nintendo Entertainment System in 1990. Silius was originally slated to be based on the James Cameron film The Terminator, but Sunsoft lost the license before its scheduled release date. Sunsoft decided to continue development rather than canceling their hard work. As it turned out, Journey to Silius went on to become a cult-classic, while later NES games that carried the Terminator license are all but forgotten.

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Tropes of this game:

• Anticlimax Boss: The final boss's sole attack is to walk towards you, crouch, and punch you, which can easily be dodged.
• Auto Scrolling Level: The final stage.
• Battleship Raid: The penultimate boss.
• Bottomless Pits: They're here and there.
• Chain-Reaction Destruction: Bosses tend to do that.
• Cores and Turrets Boss: Third boss.
• Eternal Engine: The last two stages, which include most of the stock deathtraps.
• Fan Nickname: The notorious "HumpBot" in Stage 3.
• Flash of Pain: Pink ones in this case.
• King Mook: The sub-bosses of Stage 3 and 4 are upgrades of the missile batteries and the "HumpBots", respectively, and the Final Boss is a giant version of the tall Mecha-Mooks from Stage 3.
• Magic Floppy Disk: They're in the future too.
• Market-Based Title: Known as Rough World in Japan. Often mistakenly called "Raf World" due to the way "Rough" is spelled. The player character's design was changed to give a futuristic armor.
• Nintendo Hard: The game's only five levels long, but has a rather steep difficulty curve.
• Personal Space Invader: HumpBot.
• Sentry Gun: Some of the turrets.
• Stealth Sequel: More like prequel in this case. Rough World uses the same calendar system as Chō Wakusei Senki Metafight, the Famicom version of Blaster Master, but the plot is set a few years earlier.
• That One Boss: The third boss, with its complex pattern of projectiles, is disproportionately harder than the others.