Ilya Muromets (1956) — Alexander Ptushko | Epic Fantasy | Mosfilm 4K

A legendary strongman out of Russian folk epic rides to warn the prince of an invading horde, performs a run of impossible feats, and is thrown in a dungeon by courtiers before the real battle starts. Alexander Ptushko stages it in widescreen with practical effects built for wonder rather than realism.

Why it's free: Free on Mosfilm's own channel; Mosfilm holds the rights to the Soviet-era library it publishes.