A duke level with a radical departure from the more usual themes, X64-2 is a very well textured, extremely well layed out map based on some alien world.
DukeVR's idea is simple: Three episodes, eighteen levels, three colors (blue, green and red) and lots of nasty puzzles. Levels are short - shortest (simplest) levels take about twenty seconds while bigger & more complex ones take more than a minute.
Critical Mass is a 3 level episode with 4 new weapons and new (or modified) enemies, including boss.
A secret nuclear research facility is under control of the aliens. The only way in is by a special teleport located at a EDF weaponry research building. After killing the aliens the only way out is by a escape turboplane at the hangar.
Vietcong is an tactical FPS known for its realism focused gameplay and at the time, original Vietnam war setting. The game featured many early examples of later genre conventions such as iron sights and a cover system.
In addition to the main story-driven campaign, the game also features a number of quick skirmish style missions for single player, as well as a fairly robust set of both cooperative and competitive multiplayer modes, including a downloadable set of coop missions entitled "Red Dawn" played from the perspective of Vietcong soldiers.
This game is a first-person shooter set during the Sino-Japanese War, focusing on a Chinese protagonist who leads a civilian resistance against the Japanese invasion of Shanghai in 1937, featuring historically accurate weapons and intense combat experiences in a meticulously recreated 1930s Shanghai.
Duke takes the spaceship and starts his long way to the alien base. After three days in there, he finally looks at some strange organic structure. "Where the hell did they send me to?" says duke. "Bah, there is no time to waste!". So he gets inside the mothership and prepares his gun to kick some alien ass!