
Currently, the civilization of Type I is usually defined as one that can harness all the energy that falls on a planet from its parent star (for Earth–Sun system, this value is close to 1.74 ×10 17 watts), which is about four orders of magnitude higher than the amount presently attained on Earth, with energy consumption at ≈2 ×10 13 watts. Type I Technological level of a civilization that is "close to the level presently attained on Earth, with energy consumption at ≈4 ×10 19 erg/sec" (4 ×10 12 watts). In 1964, Kardashev defined three levels of civilization, based on the order of magnitude of power available to each:

This is the first 3 of 6 parts of the Kardashev scale. The scale has three designated categories.

We were up and playing in less than 10 minutes. Once you get the 300 MB file onto your PC, the installation is simple and fast. You'll be able to build cities, create military and worker units, establish trade routes, and pursue war against any or all of the competing civilizations. The real meat is in the demo game, where you choose between Huayna Capac, Alexander, Julius Caesar, or Gandhi in a four-way royal rumble. It only covers the basics instead of just the new features, and the allure of cartoon Sid quickly fades.

If you're never played the Civilization games, the tutorial is a worthwhile venture, but if you're familiar with the gameplay, we recommend skipping it. While the tutorial is solid and the provided map is large enough to be interesting, some frame lag in combat sequences and nasty behavior after finishing your game keep the demo for the prestigious strategy game from earning a top rating. The demo offers a tutorial featuring a cartoon Sid Meier himself, and a 100-turn game as the Incans, Greeks, Romans, or Indians. Sid Meier's Civilization franchise is considered one of the greatest computer strategy games of all time, and the fourth iteration in the series aims to take the gameplay even further with improved graphics, more accurate combat-unit "strength," seven religions, and new diplomatic options.
