Nearly all browser titles these days see considerably more mobile play than they do desktop. Not any format adapts equally smoothly.
The Titles That Works Best
Tile games, incremental titles, tap-based arcade formats and continuous runners suit mobile input naturally.
Which Games Suffer
Titles built for numerous concurrent inputs – driving games, management games using dense controls – become fiddly once inputs shift on-screen.
Speed Advice
Shut other browser tabs; background tabs use device memory that a game wants. Long play uses power considerably and it heats your phone.
Making a Quick Shortcut
Either iOS and iOS permit placing a page to the main screen. The result launches much as a native app while still being nothing but a web page – which means zero device access is handed over. A touch selection can be found at 6club.