A downloadable game

Alkali is a precision platformer inspired by the chemical reactions of alkali
metals. Use your physical properties to propel yourself across a variety of
dangerous levels, coupling traditional platforming mechanics with the mass-based mechanics of the alkalic main character. Collect chunks of metal to grow yourself, leap into the water for an explosive jump, or barely graze past a whirring saw with just a sliver of body remaining in this new title from Sleipner Games.


  • 16 regular world levels across two worlds
  • 10 dark world levels across two dark worlds
  • Fully fledged level editor
  • Custom level support
  • High skill ceiling, perfect for speedrunning

A completionist playthrough currently takes about 10 hours (varying by skill level), not counting time spent creating and playing custom levels.

Join our Discord to discuss the game, report bugs, and hang out!

This game is currently in Alpha. 

Development log

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