A Peerful Project card game would be great. (All players play on their own phone, connected to a shared computer/game, like the Jackbox games.)
Everyone has their own set of cards on their phone, so it’s secret. They just tap one to play it. This way, you can play an intricate card game where everyone has unique decks.
At some point, though … it might be better to just create a physical board/card game instead :p