I have several games for a lazy evening on the sofa, so it depends on the mood.
I hoard virtual cars, tanks and ships, so I pick CSR2 when I want to do an event there (daily boring grinding tasks are automated). When I want to shoot I either junp in World of Tanks Blitz or World of Warships Blitz.
When in a mood where I want to just tap around, I dust off Hay Day.
Gershwin Impact has been on the tablet, but after a few attempts to play it, it’s removed again. Looks nice, but not my style, yet.