Question: What 1997 computer game is the sequel to a mecha based first-person shooter video game developed and published by Activision?

Context paragraphs:
Heavy Gear (video game): Heavy Gear is a 1997 computer game based on the "Heavy Gear" role-playing game.  A sequel, "Heavy Gear II", was released in 1999.

Battlezone (1998 video game): Battlezone is a first-person shooter strategy video game developed and published by Activision.  A remake of an arcade game of the same name, it was released for Microsoft Windows in 1998.  It was released by Activision in 1998.  Aside from the name and presence of tanks, this game bears little resemblance to the original.  Activision remade it into a hybrid of a tank simulation game, a first-person shooter and a real-time strategy game.  "Battlezone" is played like any other real time strategy, but the main difference is that in "Battlezone" the player is controlling everything on the battlefield from the first person view.

GoldenEye 007 (2010 video game): GoldenEye 007 is a 2010 first-person shooter video game developed by Eurocom and published by Activision for the Wii video game console, with a handheld version for Nintendo DS developed by n-Space.  It is a modern reimagining of the 1995 "James Bond" film "GoldenEye", and a remake of the 1997 Nintendo 64 video game "GoldenEye 007".  The game was officially announced by Nintendo at their E3 2010 conference presentation.  The game was released on 2 November 2010 in tandem with another "James Bond" game, "".  It took on the elements of a modern shooter while retaining a classic name.  The game received positive reviews from critics.  A remastering of the Wii game was released for the PlayStation 3 and Xbox 360 consoles in 2011, re-titled as "".

Heavy Gear II: Heavy Gear II is a mecha based first-person shooter video game.  Set in Dream Pod 9's Heavy Gear universe, the game was developed and published by Activision in 1999 for Microsoft Windows, it was ported to Linux in 2000 by Loki Software.  It is a sequel to the 1997 video game "Heavy Gear".

Arunodoyer Agnishikha: Arunodoyer Agnishikha (Bengali: অরুণোদয়ের অগ্নিশিখা) or Flame of Sunrise is a first-person shooter video game developed by Trimatrik Interactive and published by SHOM Computers Ltd. in 2004.  Based on the 1971 Bangladesh Liberation War, it is the first first-person shooter video game based on events of the war and developed in Bangladesh.

Call of Duty: Zombies: Call of Duty: Zombies is a 2009 first-person shooter video game developed by Ideaworks Game Studio, and published by Activision for iOS.  It is a spin-off of the "Call of Duty" series, and based on the Zombie mode of "".  The game was released worldwide on November 16, 2009.  The game allows for multiplayer cooperative gameplay locally via an ad hoc Wi-Fi or Bluetooth network, or globally via the internet.  However, restrictions can turn multiplayer off.  It also comes with the three other maps, Verrückt, Shi No Numa, and Der Riese.  A sequel to the game, "" has been published by Activision.

Destiny (video game): Destiny is an online-only multiplayer first-person shooter video game developed by Bungie and published by Activision.  It was released worldwide on September 9, 2014, for the PlayStation 3, PlayStation 4, Xbox 360, and Xbox One consoles.  "Destiny" marked Bungie's first new console franchise since the "Halo" series, and it is the first game in a ten-year agreement between Bungie and Activision.  Set in a "mythic science fiction" world, the game features a multiplayer "shared-world" environment with elements of role-playing games.  Activities in "Destiny" are divided among player versus environment (PvE) and player versus player (PvP) game types.  In addition to normal story missions, PvE features three-player "strikes" and six-player raids.  A free roam patrol mode is also available for each planet and features public events.  PvP features objective-based modes, as well as traditional deathmatch game modes.

Descent II: Descent II is a 1996 first-person shooter video game developed by Parallax Software and published by Interplay Productions.  It is the second game in the "Descent" video game series and a sequel to the original "Descent".  Unlike standard first-person shooters, the player must control a flying ship that has a six degrees of freedom movement scheme, allowing the player to move in any 3D direction.  The original soundtrack features industrial metal contributed by notable musicians such as Type O Negative, Ogre and Mark Walk of Skinny Puppy, and Brian Luzietti.  The game received very positive reviews from video game critics.  A sequel, "Descent 3", was released in 1999.

List of accolades received by Titanfall: Titanfall is a 2014 multiplayer, first-person shooter video game developed by Respawn Entertainment and published by Electronic Arts exclusively for Microsoft Windows, Xbox 360, and Xbox One.  The game was highly anticipated as the debut title from developers formerly behind the successful "Call of Duty" franchise.  It was released March 11, 2014, to what video game review score aggregator Metacritic called "generally favorable" reviews.  Critics considered the game a successful evolution for the first-person shooter genre but did not agree as to whether the game delivered on its anticipation.

Strafe (video game): Strafe (stylized as STRAFE) is a first-person shooter video game developed by Pixel Titans and published by Devolver Digital.  The game is an homage to 1990s first-person shooter video games, such as "Doom" and "Quake", advertised as to have "bleeding edge graphics and gameplay", citing the year 1996.  It was released on May 9, 2017.

Supporting paragraphs: Heavy Gear II Heavy Gear (video game)
Answer: Heavy Gear