UIFO DEFENSE HD — this is a new strategic battle game in which you need to protect your space base from the fearless actions of alien creatures. The game will appeal to players who like good graphics, nice Tower Defense gameplay and lots of tasks and tests. So, according to the plot of this game, aliens want to take your crystals into their possessions, which are able to supply the whole base with energy. Only these crystals, capable of bringing science and technology to the highest level, do not let them steal. Each military base has 15 crystals, you need to protect them all from aliens. You need to use logic and tactics to properly place the defense on the towers. The game has the ability to adjust the level of difficulty.