WASD are movement keys. E for inventory. Q to switch tools once unlocked. Chop trees, enter the cave. Sound is recommended, game may be confusing without.
Started off as the 2.0 update for Earth Simulator but I got offtrack heavily. *Plays game for 5 minutes, realizes there is nothing else to do in game* EXPECT BUGS! Things that aren't bugs: Trees requiring multiple hits to break. Not being able to craft picaxe when not near the crafting table. Limit on amount of trees spawning.