Every senior game players should remember the classic DOS game in those days - Wolfenstein 3D (released in 1992), which is probably the first FPS game you came into contact with (the ancestor of all FPS games that came out even earlier than DOOM, for example: Quake series, Unreal series). I do believe that a number of players just started to like FPS games affected by this game.

3D World Map is a powerful and high-definition three-dimensional world map (Note that: it is a 'Map' rather than 'Earth'). It enables you to accurately find 269 countries and regions in the world on this realistic tellurion, and precisely displays the locations of more than 30000 cities around the world. Plus, it can calculate the distance between any two points on the earth, and all mountains, rivers, lakes and seas can be seen with a glance on this 3D tellurion.

Tank'd (TANK'D) is a 3rd-person arcade style tank shooting game created by Team Indecisive (five students) in 2011, developed using the Unreal Engine from Russia. It was their final project in the Vancouver Film School Game Design program, that also means it's a free game.

ETHER VAPOR is a very attractive and amazing 3D flight shooting game from Japan, with excellence in production. On PC, it has exceeded many classic shooter video game works like Raiden III, ?????O.V.E.R.S., Söldner-X: Himmelsstürmer, Top Gun, and so on.

Layer MAZE is a series of small puzzle games with creative layer-structured maze elements, developed by PipkinGames. Its difficulty is not hard - even a bit low for some players with good memory. However, it can exercise a person's brain energy enough - reaction speed and short-term memory.