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Koya Rift
Genre: Action, Casual
Platforms: PC
Languages: English
Players: Single-player
Aug 30, 2012 @ 1:28pm
Oct 30, 2014 @ 3:01pm

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Koya Rift is an action-packed platform shooter that is built around circular gameplay; which emphasizes a huge replay value by feeding the player a stream of short term goals that don’t end. In Koya Rift, the player must enter a hostile planet and destroy an alien race so the planet can be colonized. Each round, the player is dropped off at the surface and must venture into procedurally generated caves, earning upgrades and buying units as he goes along. The difficulty adjusts precisely to the skill of the player over time, providing them with a consistent challenge. The goal of the game is to provide a challenging, yet casual experience that’s easy to pick up and put down.

In-Depth Elaboration (as told by developer Zach Kehs):


I view the story of a game as an underlying excuse for the gameplay. I wanted to provide players with a motive to partake in hours of senseless action-packed combat, while not at all caring for consequence, morals, or any of that other touchy-feely stuff. This feeling is synonymous with the mindset of the protagonists of the story – you play as a band of professional futuristic mercenaries on the search for planets to sell to governments for colonization. The world is too overpopulated in this future and the small environmental tolerance of humans forced acceptably hospitable planets into a position of top market value.

The mercenaries stumble upon this planet, claimed and named “Koya”, which is worth a fortune due to the gentleness of the natural environment (oxygen in the air, green plant life, bodies of water, proper planet mass for earth-like gravity). They then discover what they have soon named the “Phantoms”. The Phantoms are hateful, vicious creatures that have formed out of the technology of an ancient race, and the hatred between their own kind that caused their demise. The Phantoms are incredibly adaptive – they quickly managed to assemble and combine energy weapons like the ones the mercenaries used to damage them onto their own soldiers and fight back. The mercenary company is running out of metal to form their own fighting droids (harvested from a nearby asteroid) and cannot afford to leave the planet to get help, for a rival company or government might discover the planet and claim the wealth for themselves. Stubbornness and determination prevent them from leaving altogether. They have not wasted this many resources to quit! Ally scientists were able to estimate that the enemy is originating from a point near the planet core they call “the rift”. Their mission is to completely exterminate this race, and that means sending their best to find and destroy the rift (that’s you!).

You play an a “Lancer” – an extremely expensive and advanced human-manned suit that has the ability to wield ”Lances”(very powerful and rare energy weapons from the ancient race on the planet) with stimulated telekinesis using the pilot’s brain. These suits, each carrying a highly trained mercenary, are dropped onto the planet inside of an orb that is used by the soldier to order backup in the form of robotic droids.


A game of Koya Rift is pretty straightforward – you find yourself above ground standing in front of one of the delivery pods from the mercenary mothership. Your minimap hides the area below ground – and you have no idea what awaits you. The terrain of each level is procedurally generated (meaning it uses advanced algorithms to make itself different every time, providing nearly endless possibilities. See Spelunky). Below ground lies a web of tunnels and caverns that is different every single time you play. It’s impossible to know what awaits you behind every corner. Procedural generation isn’t just in the level – all of your enemies will seem different too. Their size, speed, color, health, damage, and weapon behavior will be unique for each one you fight. Your own weapons are generated the same way – the Lances you bring along with you to levels are generated out of endless possibilities. One gun may fire large, single shot energy blasts that slow down and weaken all enemies in a large radius, where another gun will shoot bursts of many bullets that curve in every direction with a waving motion, another gun that fires several shots at once but can pierce through walls and home after enemies, and another that heals and enhances your allies.

You have to venture down into the unfamiliar cave system and eliminate all of the Phantom Crystals (Where the enemy soldiers are grown). Unfortunately the Phantoms are hunting you the whole time, while their crystals evolve and grow. If you manage to destroy all the enemy crystals, you win the level.

Don’t get too proud though – if you beat it too easily the game will know and will be sure to adjust the difficulty for next time. Game difficulty in Koya Rift is complex – it’s not a simple modification to the amount of health you have, and it isn’t a simple easy-normal-hard scale. Difficulty is a very precise unit of measurement that expands near-infinitely in either direction in this game. If you beat your last couple of levels easily it will slightly increase, if you keep getting beaten down without a fight it will decrease to help you out. Difficulty adjustments affect almost everything in game – from the reaction speed of the Phantoms, to the speed at which they grow and evolve, to the cost of your allies, the experience they need to level up, the accuracy, size, fire rate, and density of your energy weapons, the rate of health recovery, the effects of special weapons, the size of the levels you play on, the health and damage of your enemies, the speed and fragility of your allies, the cash value of killing an opponent, the swiftness and force of enemy attacks, and even more. There are so many values that change, and when they do change, they change with such subtleness that you will not be able to pick out exactly why this next game seems like more of a challenge for you than last, or why you’re finally able to beat that one level that you were stuck on for so long.

These items combine to create an excellent formula for expandable gameplay – in the end you have a game that you can always come back to and find something different, and always be challenged regardless of your ability.

I hope you enjoy it if you choose to pick it up or give me a vote.

Contact is , feel free to ask questions, give suggestions, ask advice, complain, praise, or whatever else besides spamming. I’ll usually respond to everyone.
Popular Discussions View All (2)
Apr 27, 2014 @ 10:24am
looks great
Oct 25, 2013 @ 6:47pm
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Jordanator Oct 18, 2014 @ 6:18am 
Beautiful, Voted for and good luck
Adam [Moviemaking] Sep 15, 2014 @ 12:07pm 
Would definately play, I love fast paced games like this!
obnimuta Aug 2, 2014 @ 1:14am 
amazing dynamic, nice OST.. like
stickpro Jul 28, 2014 @ 7:24pm 
danalyze Jul 27, 2014 @ 11:13pm 
Voted and bought it through's DIG Mini Bundle 1.Best wishes!
pollito ninja Jul 25, 2014 @ 11:27pm 
Out Of Control Jul 25, 2014 @ 5:17pm 
JFrenzy001 Jul 25, 2014 @ 1:52pm 
turned Jul 25, 2014 @ 10:50am 
Fukuwa Jul 8, 2014 @ 7:53pm 
Good game, voted!