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A "physics" game about space. Build rockets, space planes, space stations, rovers, landers, probes. Explore planets, moons, capture asteroids. With the addition of mods you can even test warp drive, set up a communications network, colonize a planet, mine for resources and much much more. It can even simulate our solar system (the in-game one is very similiar, although smaller to encourage new players. Learn orbital mechanics. Inspire yourself to learn about space and space travel history of human. This game is not only fun - it is inspiring. The game is under heavy development but is already playable (and gives a ton of fun!). Works very well under Linux (64bit as well). See More
In Portal 2, co-op is a completely different set of puzzles than the single player campaign. Almost all puzzles require a high level of teamwork that will leave you feeling proud of what you have accomplished. In a game that requires prefect timing and teamwork, Portal 2 features many tools to facilitate teamwork. One of the most helpful is a 3 second countdown timer that can be initiated and shown to both players to insure you launch that portal or jump at the perfect time. In addition, there is a marker that you can place on certain objects for your teammate to see as well as a setting that shows your partners view super-imposed on the corner of your screen. See More
In a game that requires perfect timing and teamwork, Portal 2 features many tools to facilitate teamwork. One of the most helpful is a 3-second countdown timer that can be initiated and shown to both players to ensure you launch that portal or jump at the perfect time. In addition, there is a marker that you can place on certain objects for your teammate to see as well as a setting that shows your partner's view super-imposed on the corner of your screen. See More
The game has more than 60,000 co-op puzzles created by users through the Steam Workshop and through mods. Because it is user-generated content, the quality and size of these puzzles vary widely, including everything from simple, one-off chambers to full-fledged expansions with high-quality stories, voice-overs, and new gameplay elements (for example, Mel). See More
The interesting bit about the game is how it has one solve puzzles. Users will use their Interdimensional Shift Device (IDS) to change many aspects of their environment, such as shifting time or changing gravity. SO for instance you could make a heavy object ligh, just so you could throw it across the room. It is through combinations of these tools that you will be solving complex puzzles. Luckily the puzzles never seem to convoluted, making for a fun puzzle game with clever solutions. See More