Project Stealth Fighter (aka F-19 Stealth Fighter) - Commodore 64 - North Cape, Ultimate difficulty.

Here's a mission I did in the 1987 Commodore 64 military flight sim Project Stealth Fighter (aka F-19 Stealth Fighter in later releases). With enemy AI, realism, and war state all cranked to the max, it's effectively second only to Central Europe in game difficulty.
My stealth rating was garbage, especially against the last couple of MiGs that chased me all the way back to Norway (consequence of not packing A/A missiles), but with multiple targets blown up, including the primary objective of the runway, I otherwise can't complain.
This is easily my favourite Commodore 64 game. While it's on the slower side, I nonetheless love the amount of depth and variety this game packs, and how it rewards good technical and tactical skill. The stealth element makes this game rather creative, compared to most other sims of not only 1987, but even today. reminding me slightly of Metal Gear in the stealth elements. MicroProse really showed off their early skill with this title.