Portugues
Bad Kaiju Ju
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About the game
Bad Kaiju Ju is set in an imagined 1977 where most of the land is under water and cities float on the sea. Boats keep sailing towards one of those cities, and the only defence is a huge jellyfish-like creature that swims back and forth below the surface.
You do not steer the creature: it patrols on its own. All you choose is when it leaps. Press the key and it shoots straight up out of the water; if it reaches a boat on the way, the boat goes down and a tally mark appears at the top of the screen. Every boat you stop makes the next one faster, and if a boat makes it all the way to the city, the round starts over. Stop enough of them and the attacks die down.
Playing it here
This is a CHIP-8 program. CHIP-8 is a small virtual machine from 1977, created for hobby computers such as the COSMAC VIP, and people still write new games for it today. Bad Kaiju Ju targets the original CHIP-8 and was first made for Ludum Dare 33, a weekend game jam, in August 2015. It runs here in the Octo emulator. Click Play and the game starts right away.
F2 saves the state of the emulator at any moment and F4 brings it back. A gamepad works too: Up on the D-pad makes the creature leap.
Controls
| Key | Action |
|---|---|
| W or Up arrow | leap out of the water |
| F2 / F4 | save / load the state |
A few things worth knowing
Lead the boat. The creature stops and rises straight up, while the boat keeps sailing left towards the city, so leap when the boat is just to the right of the creature, not when it is already overhead.
It only leaps from the bottom. While the creature is in the air, or sinking back down, the key does nothing, so a missed leap costs you a full cycle. Wait for a clean chance.
Faster every time. Each boat you stop speeds up the next one, so the last few hits need the sharpest timing.
Credits and licence
Bad Kaiju Ju was created by Matt Booth for Ludum Dare 33 and written in Octo, the CHIP-8 assembler and emulator by John Earnest (MIT licence). Its author placed it in the public domain under CC0 1.0 through the Chip8 Community Archive. The licence text is linked from this page.