I got a heap of review notices for proposed edits, merely to find that a majority were simply adding "in [this game]" to the end of the title.
I chose to reject them for being too minor, but the option wasn't there? When does this option appear?
The "too minor" rejection reason has been removed. The current advice is to either reject as incorrect (if applicable), or improve the edit if there's more to be improved. See this answer for details.