Trapped in swarms of nefarious alien machines, you must skate your way to safety! Luckily, Astro Angels and Cosmic Eggs are scattered throughout the asteroid belt to aid your escape from the galatic chaos!

Cosmos Street is an old-school auto-runner inspired by the skateboard sequences in Wonder Boy, complete with borrowed sprites and reused sound effects. Made purely for fun and as an experiment in pushing creative limits within the constraints of classic video game design.

How to play

• Jump = Arrow Up
• Slow down = Arrow Left
• Speed up = Arrow Right
• Sound on/off = S

Astro Angels shield you from collisions, and Cosmic Eggs grant an extra air jump. A hidden scoring system is also in place, awarding score multipliers to skilled players. See if you can figure it out!

The game is primarily designed to be played using the left, up, and right arrow keys on a physical keyboard. The movement simply feels better this way. Virtual buttons have been added to make the game playable on touch devices, which is great, since many games aren’t, but the controls aren’t quite as tight as with physical keys.

This is version 1.0, warts and all. A few small, nasty imperfections remain.

That's it! Good luck!

About

This game was made with the following ideas in mind:

Avoid creating new assets. Instead focus on piecing together what already exists to make something fun. Producing art, sound effects, and music is time-consuming, so for the main character I chose the skateboard sprites from the original Wonder Boy. I find the art style expressive and am impressed by how much personality can be squeezed out of just a few frames of animation.

To capture the right feeling, I borrowed sound effects from games of the same era as well.

Other contraints and requirements:

• Limited palette. Only allowed to use four colors palette. Inspired by the original Game Boy and tweaked for a distinct vintage futuristic look. Can't remember the inspiration source.
• Small screen, 256 x 256 px. Wrapped in a CSS Clip Path to get a round-ish shape. No other reason than it's nice.
• Only use standard HTML, CSS and JavaScript. No dependecies.
• Should have Keyboard and Touch Controls.

Credits

• The art for the enemy, called Relic Telly, is made by calegaea75432. Slightly modifed.
• Music track is Retro Platforming by David Fesliyan. Lovely tune.
• In Game Font is modelled after Highway Chase / Data East / 1980 by Void. Redrawn in Aseprite.
• Sounds Effects, all credits to the original creators and The Spriters Resource for providing. The following sound effects are used.
  • Wonder Boy III: The Dragon's Trap (SMS)
    • dragon-breath.wav
    • box-get.wav
    • enemy-hurt.wav
    • fireball.wav
    • jump.wav
    • select-cursor.wav
  • Mega Man (NES)
    • PiPiPi.wav

Source

Source code, assets, everything, is available at GitHub.