Osiris 1 is an adventure game, and this game instruction is from www.flash-games.net. Game instructions: press ’A’ to move backwards,’D’ to move forwards, and ’W’ to jump. Use your mouse to aim and click to shoot. Just come on and try it, you will like it when you playing it. The online game Osiris 1 is a free game to play on PC, Mac or Laptop computers. You can read the game comments below on Osiris 1, which may contain cheats and tricks, cheat codes, tips and full game solutions. You can play Osiris 1 for free on Internet, or download this game on your computer to play it off-line.