Frontier

Frontier (Elite 2) is quite simply, freedom.

A space-flight sim where you can do, well anything. You can be a mercenary, hunting down specific ships for paid contracts; a black market trader, trading in such illegal items as nerve gas and narcotics; a military agent, taking missions from either of two organised armies; a bounty hunter, mercilessly hunting down thieving pirates; a passenger carrier or if you prefer the more solitary life, you can even be a miner. However, the true beauty of it all is that at any point in the game, you are all of these things and none of them.

No-one gives you a mission. You choose them.
You start as nobody. Grandson of Commander Jameson (a noted fellow indeed) whom, unfortunately, has just passed away. On the up-side, he's left you a low-class fighter ship and one hundred credits! Presumably, you'd like to earn some more credits so that you can buy one of the 25+ other ships available in the game? No? Perhaps some of the 40+ weapons or 30+ ship upgrades would interest you? The possibilities ARE endless.
David Braben's brainchild is as detailed as it is open-ended. There are literally hundred's of thousands of star systems which you can visit. Each with anything between 2 and 20 planets (all of which you can land on). You can't even begin to explore the whole galaxy. Furthermore the stars are all real (a real map of our 'Milky Way' galaxy in fact). There are loads of populated systems (i.e. places where you pick up missions, ships, weapons, commodities etc) which endow the game with a longevity which is simply unrivalled (even by today's standards).
Graphically, we are seeing some of the first true 3D rendering on the Amiga putting the game in a very high class for the time. It all gives the game a very real feel.
The audio is a tad limited, however, the inclusion of a famous classical soundtrack (with classics like Mussorgsky's 'Night On A Bare Mountain' and Debussy's 'Blue Danube') and a great theme tune more than makes up for it.
In layman's terms, Frontier is one of the best Amiga games ever released. It is a MUST-HAVE title which will leave you wishing that today's developers made games that were half as inventive.