The Breach

The Breach is a browser-based Flash Game made by Berzerk Studio, famous for Homerun in Berzerk Land and Trap Master.

The story centers around Sergei, the head of security on a human spaceship, after he is sent over to investigate the suspicious silence of the prototype SW-JUMP starship. The experimental hardware of the new engine has created a rift into an alternate dimension filled with giant yellow butterflies, mysterious goo and the colour yellow.

Gorn ensues

Sergei must now fight through a ship infested with zombies, mutated spiders, the aforementioned giant butterflies, horrific mutants and insanely mutated crew members; not to mention a few sojourns into the evil yellow mutant dimensions along the way.

Tropes used in The Breach include:

Anticlimax Boss: All of them. As long as you don't get pummeled too badly by some of their attacks, every boss dies after a few seconds of constant fire. Then you start the next mission on full health. It's often safe to simply stand in the same spot and shoot, taking blows as they come.
Blessed with Suck: The Prototype Suit gives you a sprint feature, which activates when you double tap forwards or backwards. Which you can do accidentally when navigating tricky platforms, fighting enemies or simply moving forward. The final boss battle takes place over a bottomless pit on a couple of narrow platforms.
Body Horror: The Game.
Bottomless Magazines: Your gun never needs reloading. Even when firing three bullets at once.
Cap: Level 20, no higher.
Cosmic Horror: The entity that the yellow cultists worship. It resembles a massive flying insect made of shining golden light.
Cosmic Horror Story: Very much so. In a forum conversation, the developers even said that the name of the final boss was "Elder God".
Deflector Shield: you have one, but it's next to useless.
Double Jump: Justified, your second and third suits have short-burn jetpacks.
Downer Ending: Although the Yellow Dimension's link to our universe is severed with the ship's destruction, the endgame stinger reveals that Sergei received the full blame for the slaughter of the ship's crew and was sent to an asylum when his tale (natually) fell on deaf ears, and to top it all off, it turns out he was infected by The Corruption after all. The game ends with an alien parasite graphically clawing its way out of Sergei's mouth while his interrogator flees in terror.
Eldritch Location: Towards the end of the game, The Yellow dimension (which resembles an ominous mountain range covered in yellow mist and strange golden hieroglyphs floating in the sky) begins to merge with the ship.
Fridge Logic: Why are there so many bodies if everyone becomes a cultist, mutant or zombie except a few with Heroic Willpower?
- Fridge Brilliance: The cultists were mutilating and sacrificing each other, either uncontrollably as part of the transformation cycle or willingly for some sort of religious reason.
- More Fridge: The mutants could have been killing weaker minded cultists specifically for a nightmarish gore-display.
  - Or because that would actually help open the portal. As one of the last logs by the now insanechief medical officer says, "The gods will use our abject flesh as a portal, and what was worthless will become holy. Pain is nothing compared to the reward"
Gorn: Oh sooo much. Enemies and environments are liberally splattered with blood and goo, and death animations for some enemies and bosses include being torn apart by the tension in their own muscles, exploding, vomiting blood and goo, being ripped in half and occasionally simply falling down dead.
Journey to The Centre of The Mind: You have weird, hallucinogenic trips into the Yellow dimension every now and then. Usually, it's because there are recently corrupted humans trying to help you. Later, the Yellow sends it's own messages through these dream sequences, leading to...
- Battle in The Centre of The Mind: The final boss breaks into your thoughts and attempts to mentally kill/corrupt you.
Light Is Not Good
Metroidvania: platforming, side-scroller Survival Horror game with RPG Elements. The game is broken up into levels, but you get a mission select screen between each one.
One-Way Visor: the starting and ending armors appear, to have this, but the cutscenes show Sergei's expressions.
Place Beyond Time: the Yellow dimension.
Shotguns Are Just Better: It fills entrire corridors with bullets, and can triple your damage output when at point-blank range. Once you hit level 15, it fires about five shots per second and three bullets per shot. Bosses go down pretty easily, and mooks go down like popcorn
Survival Horror: Zig Zagged, your gun never needs to be reloaded, but health pickups are a once-per-level occurence.
There Is No Kill Like Overkill: You unlock an upgrade for an infinite-ammo-automatic-shotgun. Which is your standard weapon from then on. And it doesn't need reloading. You get damage and fire rate upgrades when you level up too, making this even more powerful.
- Subverted in that a lot of enemies have high health and take forever to die, even from this.
You Will Be Assimilated: Standard Yellow procedure. The victims seem to enjoy it right until they lose their minds completely. Your death animation is to sink to your knees, groaning in agony, and then have your hideously mutated head erupt from your helmet and a wasp's abdomen, complete with stinger, from your tailbone.
Was Once a Man: All the monsters, with the exception of the butterflies and the final boss.
Whole-Plot Reference: The plot and setting are pretty much ripped from Event Horizon, Dead Space, Alien, Doom, and other Sci Fi/Survival Horror franchises.