Click and hold the pokéball to grab it, then drag and release at the same time to fling it at the Pokémon. The faster you fling it, the further it will go. Try spinning the pokéball to increase catch rate.
V1.1 If you let go of the ball and it does not throw, it will now return to the center and give you another try. Also adjusted some Pokémon sizes and fixed music bugs V1.2 added a way to enable easy mode for ease of access, Press the flag 5 times consecutively or the down arrow key to activate it. Press the flag once and wait or press the down arrow key again to inactivate it. Makes mobile play much easier. Also feel free to give me suggestions on what to add! I plan to update the game to add gen 2 Pokémon, as well as add some achievements that reveal secret codes Pokémon sprites are from Pokémon Smile All Soundtracks are from the Pokémon Company.