Silent, But Deadly

Swift as the wind, silent as death, the ninja comes to claim the life of their target... but only if they can pierce the inner sanctum.

Submitted as part of One Page Rules' Game Jam #5 - Design by subtraction.

A ninja needs to kill instantly, and cannot allow himself to be seen.

This asymmetrical game of ninjas versus guards has stripped everything out other than positioning and line-of-sight. No stats, no rolls, not even any damage or attacks.