The release of the mid-boss of Sentinels (Iron Legacy) has got me thinking about the final boss of Sentinels and how it could be improved. The big problems with Oblivaeon, in my opinion, was that there was too much going on, it took too long, and it was too hard (Especially if it meant spending six hours per faulure). But I think I came up with a way to solve these problems, while still keeping Oblivaeon epic.
I think Oblivaeon should not be a single game, but a mini campaign, with each game telling part of the fight. That away when people finish one stage, they can easily pack up the game and come back to it later and not have to try and remember what is going on. And if you fail a stage, it is not like you wasted a day doing so. This allows you to make each stage feel like something that you need to struggle to overcome.
And you could even play with it. Provide consequences for losing, or allow curtain things to carry between games. Maybe have branching paths. And you could even have multiple endings, not all necessarily good. But then, the final battle of the campaign should be a bigger, more epic game of Sentinels. But now you don’t need to make it something that you have to plan a day around.