students a using a game engine to develop their games in a class at school. After they have completed their game they decide they want to try to sell it. What kind of licensing would they need to obtain for the game engine to be able to keep the code in the game?

noncommercial
freeware
proprietary
permissive

If students want to sell their game, they would typically need to obtain a commercial licensing agreement for the game engine. This would allow them to keep the code in the game while also enabling them to sell it for profit.