Hi,
when reviewing the Swedish translation I saw some English strings that can be improved as well:

In src/retro/retro-core-source.vala there are 3 strings that begin with "This games requires..."

This is ungrammatical and should be either "This game" if it's just one game, or "These games" if it is about several games.



In src/ui/application-window.vala is the string:

"An unexpected error occured."


Here "occured" should be "occurred".