Why bother playing a 10-year old arcade-style game? Because that is basically what you are getting with MOHPA.
For starters, this game plays like a decade-old arcade type shooter. From the opening map which features the attack on the US Navy ships at Pearl Harbor, the feel & play is one of a highly repetitive, unoriginal, & lackluster game. The maps seem to appear to almost interchangeable, generic jungle setting, with behind the curve graphics more appropriate to a game from 5 or 6 years ago. Even with the texture setting on Very High, character model on High, & 2.0 shaders on, this game looks simply blah by 2006 standards, or for that matter 2004 standards, when it was released. There is simply no "heart" to it; the gameplay is immensely repetitive & boring, with your braindead squadmates shouting out the same hackneyed, 5 or 6 canned phrases constantly (Here they come, y'all!!) as they charge mindlessly into enemy machine gun, sniper, & tank fire. When not doing this they will run in circles like decapitated chickens, or get stuck on trees & rocks or behind various objects.
The game is highly scripted & linear, with absolutely no sense of spontaneity or realism. The Japanese soldiers are equally braindead in their total lack of any real AI, outside of a lot of sideways crab shuffling to avoid your fire, when not standing stock still, like targets at a shooting gallery. The worst offense of all is the totally unrealistic magical "spawning" which occurs in already cleared areas, a la the demons & imps popping up in Doom 3. Just when a battle has ended, you pass a invisible waypoint & BAM! some Japs are suddenly bayoneting you in your spleen from behind, where it was all clear just seconds before. The tedium of this style of uninspired & retro game design wears thin after the first several levels: I found myself constantly thinking, "Will anything change or become realistic here? Anything at all?" Sadly, even though I have not finished the entire "experience", the answer seems to be NO.
The only redeeming features I encountered about MOHPA were the fairly quick load times ( a pleasant surprise after all the negatives which have been written concerning this) & the price I paid at Best Buy...$9.99. Anything more & I would have demanded a refund for this steaming pile of mishmash.