Magitech, Zakeva Adventures, a blackbox game.
In a strange world where light and darkness each last for days, the night sky has no stars, and a vast empire struggles to recover from a devastating civil war with a new threat on it's borders, an advanced race never seen before. Opportunities abound for riches to be discovered, prestige and power gained, and the risk of losing everything.
There exists technology in this world, based on magic, and it has it's own advantages and weaknesses.
Guns don't exist, as there was never a need to develop explosive materials, much less technologies based on them.
The system is kept under wraps, invisible to players, but it is there, and is used to determine success and failure.
The lethality is moderate, I won't seek player death, but it will be possible to die, and dangers can be encountered that players should run from rather than confront, even if you are heroes.