Having originally been planned as an expansion pack for the first game, Galaxy 2 is largely more of the same, albeit with some changes for the better.
Structurally, while there is a hub-world, it isn't nearly as elaborate as anything we've seen before. Interestingly, the means through which levels are accessed is a linear world map, which, considering the linear levels within these worlds, makes a lot more sense of the kind of game this is.
Galaxy 2 also does some work to remedy Galaxy 1's issue of multiple missions in a galaxy simply repeating content from other missions by having you play through the exact same gauntlet again with minor variations. That still exists here, but it's nowhere near as prominent.
Galaxy 2 could be described as a second draft of Galaxy 1, in terms of general design. It's mostly the same, just cleaned up somewhat.
Structurally, while there is a hub-world, it isn't nearly as elaborate as anything we've seen before. Interestingly, the means through which levels are accessed is a linear world map, which, considering the linear levels within these worlds, makes a lot more sense of the kind of game this is.
Galaxy 2 also does some work to remedy Galaxy 1's issue of multiple missions in a galaxy simply repeating content from other missions by having you play through the exact same gauntlet again with minor variations. That still exists here, but it's nowhere near as prominent.
Galaxy 2 could be described as a second draft of Galaxy 1, in terms of general design. It's mostly the same, just cleaned up somewhat.