[Fradow]

I'm going to respectfully disagree. ONI is not hard. At least the first asteroid with normal settings (called "Survival") is not hard.

What's hard is the steep difficulty curve when you are first picking up the game, especially if you play without outside resources. The game itself does a poor job at explaining what you are supposed to do and in which order, which means frequent restarts because you didn't anticipate something you didn't know about yet.

When you overcome that initial curve, the game is actually quite easy, though it can become a bit boring after a while because there is no random event to spice things up.