I accidentally beat GemCraft: Chasing Shadows last week. “Accidentally” in that I was pursuing my new playstyle of sprinting through levels in search of all abilities when it turned out that one of them was the official end of the story. I’m not sure how much I can spoil a story that fits on one page or how much the story of a tower defense game matters; it ends with the same tone as the first game.
The story-ending level does combine a few mechanics we’ve seen across the game, rather than being a standard level. So that was kind of interesting. Something seems wrong with being able to beat a game on accident, especially given how this series makes beating the game a loss.
There are epilogue levels, plus all the levels you didn’t play or can play again for more waves and at higher difficulty. For tower defense, like FPS, the play is the thing, so it’s a matter of for how long the gameplay stays interesting (and you still have a sense of achievement). And then there’s Iron Wizard mode, beat the game again without being able to out-level the difficulty curve.