Looks like GetRecentlyPlayedGames supports a optional count parameter which is not implemented
From Steam docs:
GetRecentlyPlayedGames returns a list of games a player has played in the last two weeks, if the profile is publicly visible. Private, friends-only, and other privacy settings are not supported unless you are asking for your own personal details (ie the WebAPI key you are using is linked to the steamid you are requesting).
steamid
The SteamID of the account.
count
Optionally limit to a certain number of games (the number of games a person has played in the last 2 weeks is typically very small)
Looks like
GetRecentlyPlayedGames
supports a optional count parameter which is not implementedFrom Steam docs: