"HIGH-MACS simulator" is a free 3D shooting game for windows, inspired by
"Gungriffon", the game released in 1996 for SegaSaturn.
Official Website:
http://page.freett.com/grape2004/The game sets in a fictional Early 21st century, where world is in global crisis of conflicts, abnormal weather, food crisis.
The world was polarized by four dominant powers, The
"Asia-Pacific Community(APC)",
"Pan-European Union(PEU)",
"American Free Trade Agreement(AFTA)", and
"Organisation of African Unity(OAU)".
The player drive the biped walking vehicle called
"HIGH-Mobility Armored Combat System(HIGH-MACS)", which is a main-weapon of the game's fictional near future world. and participate in many campaigns as an HIGH-MACS pilot of The 501th mobile anti-tank troop of Japan's foreign Legion.
This game has a favorable serious-military SF settings, along with many real-world weapons, and well designed realistic mechs they fits well with the game's atmosphere. If you have a PC to meet a system requirement to run the game, worth for playing it.