X-Com TFTU for OpenXcom is an ambitious modification that integrates elements from both UFO: Enemy Unknown and its sequel, TFTD, enhancing gameplay with new features. This mod allows players to engage in warfare on land and underwater, featuring three technological levels and various vehicles including manned fighter aircraft and tanks. Players will encounter aggressive UFOs that can attack X-COM aircraft directly, and the characteristics of both UFOs and aliens vary based on race and difficulty level, adding layers of strategy and complexity to the gameplay.

The mod also introduces several submods that enhance the user experience, such as voice-overs for global events and a revamped interface that closely resembles TFTD. Players can enjoy a more immersive experience with thematic musical arrangements and visual designs that make the game more engaging. While the mod is not fully tested and requires OXCE v7.11, it provides a unique blend of features that enrich the classic X-Com experience.