Sudoku | 21 Days: A Lockdown Mystery That Challenges Reality | Suspense Short Movie

Shut in for the twenty-one-day lockdown, a writer starts doubting whether the pandemic outside his window is natural or engineered, and the film lets his isolation blur memory into paranoia. It cares less about the answer than about how convincing any theory sounds inside a closed room.

Why it's free: Free on Pocket Films' own channel, the Indian distributor that licensed it from director-producer Hiral Patel.