* ''Ikaruga'', the [[SpiritualSuccessor spiritual successor]] to ''Radiant Silvergun'' also has quite a sad ending. "Was I useful to you?".
** Even more when you realize what happens during that last barrage. [[spoiler:Shinra ''didn't know'' if his final attack worked or not - the Ikaruga was annihilated a mere second before the explosion]].
* The sad music during the credits doesn't help matters with the BittersweetEnding.