Proline

Sci-fi hex slots — a plasma flash spawns an expanding wild.

Proline is a free science-fiction slot machine built on glowing hexagonal cells, crossed by thin magenta and blue laser beams on a 5x3 grid. Its Plasma Flash mechanic ignites the centre: when a Flash glyph lands, a random cell in the middle reel becomes an expanded Wild that also converts the cells above, below and beside it, and the grid is judged again. Glyphs fly into place with a satisfying landing, winning payw…