The other three games are better, and while as a whole there is some interesting historical insight to be gained (these four games are much harder to come by than the initial four), I’d suggest this collection is of little value to anyone who doesn’t already really love Mega Man.
X5 picks off where the last collection left off, on the original PlayStation. Sticking to the series’ trademark dashing, wall-jumping action, it expands with ever more gear to collect, multiple endings to see and an enormous amount of secrets. You can also switch between the shooter X and the melee-focused Zero on the fly, which makes for some welcome variety.
Unfortunately X5 is where we start to see some problems that go on to make the games somewhat difficult to stomach in 2018. Tutorials and story conversations seem to go on forever, with the game gleefully showing off how complicated and filled with dialogue it is, which might have been impressive in 2001 but is annoying as hell now. On a positive note, Capcom has removed one of the most egregious aspects of the original English version of the game, renaming the boss characters to be more in line with the Japanese (they were originally named after members of Guns N Roses, for some reason).
Mega Man X5 is probably the most fondly remembered of the games outside the Super Nintendo.
X6 released almost immediately after X5, and is so similar that today it would probably just be additional downloadable content. Though X5 was originally designed to be the final entry in the series, and as much is clear from its endings, X6 is quick to undo those dramatic conclusions and return to something of a status quo. It’s more of the same in most regards, although with some interesting diversions such as the upgrade system, which sees robots hidden in the stages either giving you new gear or becoming powerful enemies depending on whether you rescue them before they’re infected by an evil virus. The game also features full Japanese voice acting with English subtitles, something I wish could have been applied to all the games.