Conquest of the Stars is a strategy card game for 2-4 players where the goal is simple: you are out to capture more planets than your opponents.
Of course your opponents are trying to do the same thing, so it's not going to be easy ...
Each turn you draw cards to add to your fleet, then explore to find a planet. You will decide how much of your fleet you want to commit to take this new planet, but the other players may decide they think it is worth battling over. They will then commit some part of their fleet, and the battle is on. Players then continue to commit ships and upgrades to better their rivals until one player emerges victorious.
Sounds simple enough. And it is simple; but simple doesn't always mean easy. Victory can be snatched away by a well timed counter attack.
Watch your strategy on when and how much of your fleet to commit to a battle. You may end up over committed too soon in the game and be unable to effectively fight the final battle when it comes.