Use the joystick to move (swipe up on the joystick to jump). Press the gear to pause and bring up save and load options. Press the inventory button to open inventory. To open a chest or talk to an NPC, first tap on the chest or npc, then tap on the inventory button. Press the button labelled "K" to change gamemodes. Press the map button to open the map. Tap the inventory slots to use them.
I remixed a project and started adding things for the zenith