Ishar 3: Seven Gates of Infinity

"Ishar 3 was published in 1994. The player starts with Zubaran or imports characters from another game of the series, and has to hunt the dragon of Sith. In order to do that, he needs to cross a series of gates, each one sending him to a different time period. Each period, like the islands of Ishar 2, has its own climate and type of landscape." Source: Wikipedia, "Ishar," available under the CC-BY-SA License.