Gen-San: Yuuyake Daiku Monogatari (いくぜっ！源さん ～夕焼け大工物語～) and in Europe as GenSan, is a 2008 platform video game for the PlayStation Portable handheld.

It is the eighth and most recent game in the Hammerin' Harry series excluding spin-offs.

Hammerin' Hero received mixed to positive reviews from critics.

[1] Sam Bishop of IGN gave the game an 8.8/10, praising the gameplay and art style while describing it as "[managing] to not feel old, just...

[6] Tom McShea of GameSpot was less receptive to the game, giving it a 6/10 while criticizing its gameplay as being "repetitive" and "formulaic".