Xenonauts is a turn-based strategy game set in the Cold War era, where you command a multi-national military organization tasked with defending Earth from an alien invasion. You must strategically deploy small squads of soldiers to battle the extraterrestrials and recover their technology. The goal is to eliminate the aliens and protect humanity from destruction.

UFO: Aftershock is the sequel to UFO: Aftermath, a strategy and RPG game set in 2054. Fifty years before, something catastrophic occurred that made Earth uninhabitable and survivors escaped to an immense flying island called Laputa. Unfortunately, a revolt against the human leadership of the island caused its destruction. Now humanity must reclaim Earth from unknown forces holding it captive. The game features advanced technologies and items for players to research and develop as well as new enemies and allies. Additionally, there are resource management elements in the strategic game as well as improved SAS and RPG systems in the tactical game.

UFO: Afterlight is the third instalment in the UFO series, bringing a unique perspective to the story of Aftershock through its focus on human inhabitants on Mars. The game combines strategic and tactical elements for an immersive experience, featuring new technologies, weapons, and environments different from Earth. Its replayability lies in players' key decisions related to diplomacy and research. A strong RPG component allows players to get to know their team members by name while they battle against various alien races with variable tactics. Diplomacy has a major influence on gameplay as does research which unlocks terraforming capabilities later in the game. Tactical missions are controlled by intelligent scripts for better enemy behaviour while physical models require versatile tactics from players who must adapt their strategies as enemies become stronger. Players can also use mind control abilities or employ psionic powers when needed in addition to using thermo visions and entering buildings strategically for advantage over opponents.