r/FlowFree

I've been playing this genre for years. Outside the original, almost every clone lets you brute-force levels by filling empty space — there's no actual deduction happening.

So I spent the last year building the game I wanted: every level in the Extreme modes is machine-verified to have exactly one solution, and there are no filler cells to mindlessly drag through. If a route "looks right" but is wrong, the board tells you by not closing.

Some of my own Extreme levels genuinely make me rage, which I take as a good sign.

Not trying to spam — I'd really like feedback from people who actually finished Flow Free and wanted something harder. Happy to answer anything about how the levels are generated and verified.