The Metal Slug series

[Moo (Watch 'Ongezellig')]

https://store.steampowered.com/app/366250/METAL_SLUG/

Pro-globalism themes in the plot: Protagonists fight for a one world government against a rebel army. Pro-environmentalism themes are also implied with the martian antagonists, who invade Earth in order to save its resources from being depleted.

I believe the 'informational' review type would be suitable for these games.

[› Furin]

On the plots of the first two games, I don't think Metal Slug 1 is pro-globalism because you're fighting against the guy that wants to establish a "New World Order."

Similarly, I don't think Metal Slug 2 is pro-environmentalism either because you are fighting against the martians.

That being said, I've looked into all the Metal Slug games on Steam and here's how I'll probably rate them:

Metal Slug 1 = recommended
Metal Slug 2 = informational
Metal Slug X = informational
Metal Slug 3 = informational
Metal Slug Defense = not recommended
Metal Slug Attack Reloaded = not recommended
Metal Slug: Awakening = not recommended
Metal Slug Tactics = not recommended

For the informational ones, it's because there are playable female front-line combatants (Eri and Fio). The player does not have to play as them and they do not make an appearance if the player chooses to play as one of the male characters.

For the not recommended ones, Eri and Fio's involvement in the story/gameplay is not optional. They make an appearance and/or the player must play as them at some point.