Popular games published by company Interstel Corporation

Empire is a turn based strategy game where the player founds cities and build armies in order to achieve world domination.

Welcome to the future of space warfare! Star Fleet II: Krellan Commander puts you in command of an advanced space battlecruiser and tasks you with exploring sectors, fighting and boarding enemy ships, and invading planets. Manage your ship, crew and escorts effectively and find your way to victory!

Earthrise, also known as Earthrise: A Guild Investigation, is an adventure game designed and programmed by Matt Gruson and published for MS-DOS in 1990 by Interstel. The player assumes the role of an astronaut sent to an asteroid base to investigate why it has ceased communication. It uses a combination of a text-based interface with EGA graphics.

In Star Fleet I: The War Begins, you are a cadet fresh out of Starfleet Academy and have assigned to command your first U.G.A.S. Starship! The Federation is currently at war with Krellans and Zaldrons, so choose your first ship from the Federation starport and prepare for your first mission! The graphics of the PC version of Star Fleet I: The War Begins are represented by ASCII characters. Everything from your starship, the mainframe to torpedoes are all ASCII characters.

A sci-fi adventure game for DOS with EGA graphics and a text interface in which the player has to save the Earth from colliding with a mechanically-controlled asteroid.

D.R.A.G.O.N. Force is a turn-based tactics game. During each round, the player assigns orders to the men, e.g. moving, firing or special actions, which are then simultaneously (together with the AI's choices) performed. There is a strategical map (shows the whole mission area) and the closer zoomed in tactical map. As expected, the three fire commands are especially important: the usual direct fire at an enemy, targeting a specific spot or an opportunity fire which gets triggered by passing by enemies. The environment, e.g. hedges buildings, may be used as cover and affects the line of sight.