I made this topic because I've started playing a particular PS2 game recently that I found in a bin, called Naval Ops 2: Warship Gunner. Long name, basically it plays like an arcade battleship game on steroids, it owns.
Gameplay:
http://www.youtube.com/watch?v=1NPLrYluKbQThere's enough rewarding content and secret items (new weapons, ship hulls, ludicrous defense systems, etc.) to keep you occupied and entertained for a long time. I play it on the side while I work on stuff.
Also another, more recent game that isn't getting nearly enough love, Rune Factory for the Wii
http://www.youtube.com/watch?v=4AFzEwTIUYs&feature=relatedIt's Harvest Moon (even made by the same people), except with allot more content all around. It's out in the US right now, features every basic concepts from the other harvest moon games, plus dungeons, crafting, and other things. Unlike the DS games, it's quite balanced and there's enough content to keep the player occupied for a long time. The content is also very rewarding gameplay-wise.
Talk about your favorite, most obscure and underrated games here.
Or games you liked but everyone else hated.