The European Space Agency has just succeeded in landing a robot on a comet. This historic event has generated considerable excitement in scientific arenas. Slots players at online casinos are also agog at the news and have started tracking outer space themed games. This article reviews some of the best.

One of the best outer space themed slot games was launched by the software provider Microgaming as its 400th title. The Great Galaxy Grab instantly became popular because it had a story to tell along with excellent gaming features. Captain Bronzebeard is tracking his wife through outer space, because she has taken off in his new spacecraft in a fit of jealousy. On the way he stops at galactic hot spots which become the venues for lucrative bonus games. When the bonus game is triggered you are taken to one of these locations in sequence and are given an opportunity to earn bonuses. These venues, which are exquisitely designed in 3D graphics, are bank, gas station, diner, saloon, casino and mall. In the saloon you play a high low card game and in the casino you spin the wheel of fortune and so on throughout the bonus trail.

The Cryptologic outer space themed slot game is titled Outta Space Adventure. It is from the Movie Mayhem series that pays tribute to popular genres of films. Outta Space Adventure will make you remember blockbuster movies like Star Wars and Star Trek. The symbols on the reels are a hunky captain, an attractive lady co-pilot, an asteroid, a scientist, a spaceship, an alien and futuristically crafted high value playing card symbols. The audio visual animations and background music add to the enjoyment.

Outta This World is the outer space theme slot game from the portfolio of Realtime Gaming. This slot game also reflects the theme through symbols like a green alien, a spacecraft, a telescope, a laser gun and an image of Earth from outer space. The high value card symbols are crafted in bold colors like space stations. The reels have the background of outer space. The alien is a wild symbol that expands to cover all the rows on the reel. The black hole is the scatter symbol and triggers the bonus game on the second screen. You have to select from ten planets to reveal prizes like free spins and bonus credits. But watch out for the aliens, because if you get two of them the game is over.