Modern Exteriors Posted!
Their license allowed use in and out of RPG Maker, regardless of which maker you legally own; so yes, they can all be used for Ace. However, only the ones in VX were formatted for VX (which by definition means they will work in Ace as well). So if you use the ones that were made with 2K/3 in mind, you'll have to reformat them to work, including reconfiguring the size to be 32x32 and redoing the auto tiles so they work with Ace's auto tile format.
Very much worth it, though, to put in the effort to convert the 2k/3 Mack tiles, since VX only received about a quarter of the total Mack resources that 2K/3 received.
That is what I keep hearing, since Mack's stuff was original.That 2003 project file has some very useful things, thank you for the reminder. Now we can legally use them correct?