How to Create Pure CSS Games
summary
Builds a working pure CSS game that uses label elements plus hidden input radios and checkboxes to act as buttons and flags, CSS :checked sibling selectors to show frames, and opacity changes to “kill” targets; prints score with a CSS counter and implements a 99 second countdown via synced CSS animations. Movement and randomness come from dynamically generated keyframes produced by a Sass loop and random() calls for 100 creatures. All mechanics run without JavaScript and the demo runs in CodePen.
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chapters (20)
- 0:00Introduction
- 1:24Pandemic inspiration
- 3:07Coronavirus invaders game
- 4:52Game visual design
- 6:59HTML/CSS preprocessors
- 8:01CSS game frames
- 10:07CSS checkbox actions
- 11:32Dynamic game elements
- 14:21Click handling
- 16:26Pure CSS score counter
- 17:51Score counter demo
- 19:36Pure CSS countdown
- 22:06Random values in CSS
- 25:00Reset game state
- 26:24Game over curtain
- 27:07Key takeaways
- 28:31Speaker & resources
- 29:14Q&A CSS limits
- 31:21Q&A front-end collab
- 33:07Closing
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