The game presents the player with hunting scenarios of increasing scope and grandeur which involve the capture or killing of monters. As the game progresses the complexity of this task increases and players need to carefully plan and prepare for hunts by researching the monster types in order to understand weaknesses and equip accordingly.
I have a copy of Monster Hunter Freedom Unite on the PSP. This is the second most recently Monster Hunter game released in the west, with the most recent being Monster Hunter Tri (3) on the Wii. I don't have a Wii so the PSP seemed like a good option. The game is very time consuming and probably suits a platform like the PSP well for someone who might play 20 minutes here and there over an extended period. I also have a copy of the original Monster Hunter release for the PS2 however I'll stick with this more recent and portable version.