Dunno about playing un-fun games for achievements, but Civ V (for example) has achievements to push you to explore every part of the game. Going through them h

Dunno about playing un-fun games for achievements, but Civ V (for example) has achievements to push you to explore every part of the game. Going through them has me working on crazy win conditions, the 1-city challenge, different leader strengths, etc. Adds a bunch of replay value for a pretty small amount of extra effort.