Fissionary – Full Version is free on itch.io: claim it before Oct 12

Fissionary - Full Version is a fast arcade game where you build explosive chain reactions, collect matter, and push your reactor to the edge of catastrophe. Normally priced at $2.00, it is currently available as a free download for Windows players.

It is a solid pick for anyone who enjoys score-chasing arcade titles with physics-driven chain reactions and the constant tension of a reactor threatening to blow. Short runs make it easy to pick up and play in quick bursts.

Since this is a full-version giveaway through itch.io, the game stays in your library after the deal ends on October 12, 2026, so claim it once and keep it for good.