Games like Half-Life: Opposing Force, UnMetal, and Metal Slug XX, ranked by the GamesGraph community.
Last updated: August 23, 2026

• 1

  1

  Half-Life: Opposing Force

  1999November 1999 by Gearbox Software

  Shooter, Platform, Puzzle

  Shooter, Platform, Puzzle

  6.05 Okay++ Add
• 2

  2

  UnMetal

  2021April 2021 by @unepic_fran

  Platform, Adventure, Stealth

  Platform, Adventure, Stealth

  5.24 Okay- Add
• 3

  3

  Metal Slug XX

  2009December 2009 by SNK

  Shooter, Platform, Science fiction

  Shooter, Platform, Science fiction

  5.02 Okay-- Add
• 4

  4

  Hardcore Mecha

  2019June 2019 by RocketPunch Games

  Shooter, Platform, RPG

  Shooter, Platform, RPG

  Needs more reviews Add
• 5

  5

  Gunslugs: Rogue Tactics

  2019June 2019 by Orangepixel

  Shooter, Platform, RPG

  Shooter, Platform, RPG

  Needs more reviews Add
• 6

  6

  Gunslugs

  2013January 2013 by Orangepixel

  Shooter, Platform, Adventure

  Shooter, Platform, Adventure

  Needs more reviews Add