[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/parasite_strike.png]]
''Parasite Strike'' is an [[WebGame online]] 2D [[UsefulNotes/AdobeFlash Flash]] HorizontalScrollingShooter released by [=DustinAux=] ([[http://dustinauxier.com/ Dustin Auxier]]) on August 24, 2011.

3 Years ago at Montfort Military Base, U.S.A. Once home to the most highly trained soldiers in the country, powerful aircraft, and some of the best technology. A meteorite crashed into the center of the base. This meteorite was not ordinary at all. Thousands of alien lifeforms crawled out of the base and attacked the soldiers. The military tried their best to kill the aliens but, they were overwhelmed as the aliens were mostly immune to their bullets and other forms of conventional weaponry. The general of the base had come to the final hard decision of launching a nuclear missile at the base, to annihilate the alien threat - or at least most of it. It was not the best decision made...

Instead of annihilating the alien threat, the nuclear blast instead, mutated the aliens and gave them parasitic characteristics. They then began to infect their fallen brethren, as well as the fallen military. It was not an alien invasion, it became a parasitic invasion. With conventional weaponry now all but useless, the base was completely deserted. With no resistance, the aliens took over the base as well as utilizing all the technology and vehicles left. Thankfully, due to guard towers stationed just outside the fort, no parasitic aliens were able to escape the base grounds. Yet, the fallen were to revive just a few hours later. The situation seemed hopeless but, all was not lost.

Over these past three years, Dr. Wesley and his assistants have been looking for a way to eliminate this threat. And after all this work, they have finally discovered and engineered a poison that can harm these lifeforms. Wesley, because of his previous jet flying experience, has decided to fly on a solo mission into the heart of the base to fire the poison in the core of the meteorite and as a result, hopefully neutralize the parasitic invasion once and for all.

Equip up to 3 weapons, adjusting each's angle and position individually, as well as up to 4 gadgets to best suit your strategy. Earn experience from each parasite destroyed. With this experience, upgrade your ship, weaponry, as well as installing gadgets to give an edge in battle. Play through 6 main levels, while discovering 6 secret levels along the way, and fight 7 bosses that will challenge your skills. Will you be able to help Wesley destroy this parasitic strike?

This game can be played at [[http://www.kongregate.com/games/DustinAux/parasite-strike here]] or [[http://armorgames.com/play/12242/parasite-strike here]].

!!''Parasite Strike'' provides examples of:
* AlienInvasion: The game's main plot and setting as the alien lifeforms have invaded the military base.
* BulletHell: The Secret Weapon after it hatches. If you thought you were in for an easy fight after its first form, you're ''wrong''.
* CollapsingCeilingBoss: The Stage 3 boss. After it fires its salvo of lasers, it'll shake the cave and cause stalactites to rain on you.
* TheComputerIsALyingBastard: The description of the Flame Shield tells you that it protects from ALL fire-based attacks. Equipping it doesn't protect you at all from the Secret Weapon's or alien leader's fire BreathWeapon.
* EarlyGameHell: The first level is pretty tough without any extra weapons or upgraded ones. After beating it, you can get more weaponry which allows you to beat it over again much more easily, giving you access to powerful weapons early.
* DeadlyWalls: Touching walls causes you to take damage. Buying the Ground Barrier gadget allows you to avert this.
* EnergyWeapon: The "Laser" weapon, which can also traverse through almost any obstacle or obstruction.
* HarderThanHard: The "INSANE" difficulty setting.
* HomingProjectile: The "Homing Missiles" are this, with the ability to home in onto targets at the cost of a lower amount of damage and fire rate.
* [[InfinityPlusOneSword Infinity Plus One Jet]]: The Super Jet, with an apt description of "the ultimate fighter jet". It can use 3 weapons and 4 gadgets at once but, costs 100,000 Coins.
* LastLousyPoint: One of the toughest challenges in the game is to get a Platinum on Stage 3. It's relatively easy to get Platinum on all the other stages.
* MacrossMissileMassacre: The "Mini-Missiles" weapon rapidly fires a series of small missiles that crisscross before hopefully nailing their intended targets.
* NintendoHard: The latter bosses and the secret bosses can become this - ''especially'' on Hard or [[HarderThanHard INSANE]] mode.
* NukeEm: The general's final decision on what to do with the seemingly endless onslaught of aliens at the base around three years ago. Unfortunately, it [[NiceJobBreakingItHero gave the aliens]] [[PuppeteerParasite parasitic abilities]] and basically made the situation worse.
* OurDragonsAreDifferent: The boss of the secret mission 3.2, Secret Weapon, is a dragon that seems to be fond off firing bullets all over the place. It even "hatches" from one of the alien ships.
* PuppeteerParasite: The aliens gain this ability (as well some retaining their original bodies) after the nuclear missile strike.
* SpreadShot: The "Tri Spread" weapon fits this description to a tee.
* StationaryBoss: The third boss, fifth boss, final boss' second form and the {{Superboss}}' first form don't move at all.
* StrongFleshWeakSteel: Played straight with the alien dragon and the final boss, both of whom can take more damage than the game's mechanical bosses.
* {{Superboss}}: The Secret Weapon. It's arguably tougher than the final boss as it uses its "[[ThatOneAttack pink fire cloud]]" more often, and has less breathing room.
* TrickBoss: The Secret Weapon. After you beat a not-very-tough alien ship-thing, it hatches into the true boss, an alien dragon.
* UndergroundLevel: Missions 3 and 3.1 both take place in the "Caverns" which are located underground.
* WakeUpCallBoss: The first boss can be this to first-time players, due to being an EarlyBirdBoss that can fire out pseudo-BulletHell.
----