Amazonia

The engine of your airplane stops while you are flying over the amazon forest, forcing it to make an emergency landing. Alone and without proper equipment, you need to transverse the great forest to reach civilization while avoiding deadly wild animals and several other kinds of dangers on the way.

Amazônia is a text-adventure in Portuguese from Brazil. One of the first computer games commercially released on that country, it has a parser inspired by the ones of Infocom and other companies, although not nearly as sophisticated (it has a small vocabulary of 40 or so verbs, it can't process chain commands, but understands pronouns). One unique characteristic of it is the requirement of accentuation on the Portuguese words. The game even provides special key combinations as shortcuts for accents to ensure compatibility with all systems.

Given the plot line, the gameplay has a strong emphasis on its survival aspect: even though it is written in first person, the game bizarrely complains about being thirsty ("Hey, I'm thirsty!"). Wild animals randomly appear to threaten the player, and must be dealt swiftly to avoid death.