https://vgcollect.com/item/173238
Developer: Grumpyface
Note: Regarding this one, Grumpyface developed Steven Universe: Save the Light, while Capybara games did OK K.O! Let's Play Heroes. Which one takes priority?
Well we can only put one on there, so you just have to pick one. The one that you pick for the entry, you can put the other credit into description.
However, when it comes to something like this, it may be that we would want to indicate the developer of the part of the software that both of these games sit on. I don't know how the actual game data is constructed or how the UX is. For example, does this game boot into a menu first and you can pick which game to play?
An analogy to this would be compilation games that use a menu you can pick from many. For example a situation like this:
https://vgcollect.com/item/10613Williams Arcade's Greatest Hits, where the individual games are developed by Williams, but the menu system that you launch the games from was developed by Digital Eclipse.
Of course if you do not know who actually developed the underlying menu/software that these two games are launched from, or it isn't really known, then you can just do the pick one/document the other situation. If we do know who developed the launcher and it is different than the devs of the two games, we would want that dev in that spot, then you could put the devs of the two individual games in the description.