Baldwin IV, the... Gamer King?
Something I've found interesting - and rather surprising, tbh - is the increasing number of games and game concepts in which Baldwin IV features, and not simply as inspiration for the characters' designs, but as himself.
Here's how many places I've found him and the accompanying artwork of him (all very obviously inspired by - you guessed it - Kingdom of Heaven)
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First, the actual games...
1) Evony: The King's Return
This article from One Chilled Gamer gives the details on his statistics.
2) Blood of Steel
You can find the details in this news announcement on the game's Steam hub.
3) European War 7: Medieval
It's a little harder to find information on this one, but there's a discussion thread here on him.
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Baldwin also makes an appearance in the mods for several games, including...
Sid Meier's Civilization V
This mod adds the Kingdom of Jerusalem as a civilization to the game, with Baldwin IV as its leader. There's info on him on this wiki page, including his war and peace themes ("The Holy Land" and "Siege of Kerak" from Crusader Kings 2, respectively.)
Sid Meier's Civilization VI
This mod also adds the Kingdom of Jerusalem into the next game of the series, again with Baldwin IV as its leader.
Crusader Kings III
This mod overhauls CK3 to allow the player to assume the role of any leader present in Kingdom of Heaven (as well as their contemporaries around Europe and Asia), including Baldwin IV - although you won't get to play as him for very long before his death.
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Finally, I've found some concept-style art of Baldwin floating around out there, too, although I'm not certain they are for an actual game or simply intended for a potential game if they happen to grab a developer's interest.
This one is by ShawnFox on Artstation:
And this one is by XuanHan Chen, also on Artstation:
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This is all I've personally been able to find so far, but there's probably more out there I've missed. If anyone has run across any other game-related art of Baldwin IV, please share!