I've played many short games over and over due to their replayability. Ratchet and Clank: UYA (here I go again) was around 6 hours long for the campaign (felt shorter), but the fact that you upgrade your weapons and character health and armor added worlds of replay value for me. You start out with the blaster, upgrade it's stats, buy new weapons, switch between them during battle for certain strategies or circumstances, upgrade their stats, buy newly unlocked weapons, upgrade them too, then use them all by performing multi-weapon strategies - depending on each situation or what mood you're in, and so on.
By the time you are used to using every gun and having maxed health and the best armor, start a new campaign. Your strategy and play-style resets and you explore the advancements all over again. You may end up developing new combo strategies or favorite weapons, or get better at the gameplay and challenge yourself and so on. It never gets old.
Kameo is the same in terms of upgrading. You start out with a warrior, upgrade it's attacks, find new warriors, switch between them during battle and use each of them for certain strategies or circumstances, upgrade their attacks, find more warriors, upgrade their attacks too, then use them all by performing multi-warrior combos - depending on each situation or what mood you're in, and so on.
By the time you are used to using every warrior and having maxed health and spirit, start a new campaign. Your strategy and play-style resets and you explore the advancements all over again. You may end up developing new combo strategies or favorite warriors, or get better at the gameplay and challenge yourself and so on. It never gets old.
I think I'm gonna enjoy this one.