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Cart #prion_v1_1_7-1 | 2024-05-20 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA
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Check it out on itch.io, and get access to the online leaderboard and additional content. I would appreciate it if you could leave me a small contribution for my work :)

PRION is a fan remake (or demake, or sidemake?) of the original Zarch(1987)/Virus(1988) game by David Braben.

Aliens are infecting Earth with a deadly disease. You have been tasked to destroy all spacecraft that pose a threat to our planet. Please act fast, as your reward is based on the amount of uninfected land in each wave of enemies. There are an estimated 10 waves of increasingly harder alien reinforcements. Reports also show that the extraterrestrials possess a device that can alter the force of gravity. We have equipped your ship with fuel and altitude gauges, a scanner, a laser cannon , and homing missiles.

Check out the full mission briefing on itch.io, or go ahead and figure it out as you go.

How to play

  • Use arrow keys to orient the ship
  • Press Z to thrust spacecraft
  • Press X to shoot laser cannon
  • Double-press X to shoot missile

Graphics

3D graphics were done using the freely available Zarchy Engine for pico-8: https://github.com/tpnk-dev/zarchy-engine-pico8

Changelog

v1.1.6

  • add HOUSE
  • infected bush now gives 40 points, just like infected tree
  • attractor beam reduces player fuel
  • whole best score can now be seen (fixed identation)

v1.1.5

  • fix suicidal pests (hitting the ground)
  • fix player losing multiple lives as once
  • give 5k rewards when wave ends
  • player now dies when it has no fuel and gets shot
  • pest doesnt count to finish wave

v1.1.4

  • fix shadow flickering (thx @krispykrouton)

v1.1.3

  • fix major kill count bug (was counting hits as kills :S)

v1.1.2

  • fix missile and enemy tracking considering wrapping map
  • fixed bug where wave can end before all enemies are killed
  • make fixed path ships only face a certain direction for the entire wave
  • fixed jumpy spacecraft heights
  • fixed bug where sometimes the death score of the kill didn't count
  • it's 2024 not 2023
  • make drones a little less likely to become mutant
  • some performance fixes with particles

v1.1.1

  • fix cartdata name
  • fix randomicity of spawns
  • make gravity changes a little lighter

v1.1

  • add starting screen music
  • first refinement of sound effects
  • add levels 8,9,10
  • add gravity and map change logic
  • fix score when enemy hits the ground
  • make missile have very high damage
  • fix the routine relating to height in relation to the ground when attacking the player by drones and fighters
P#148209 2024-05-10 03:43 ( Edited 2024-05-20 18:34)

1

this is sick

P#148214 2024-05-10 05:29

Absolutely great.

P#148261 2024-05-11 03:11

I used to love this game. Thanks for this!

P#148302 2024-05-12 07:42

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