you should play stick arena its made by X-gen to its really good like an online game you play against kids and kill them with shit tis awsome me and my friends got really into it
you end up digging soo deep, and your boss keeps saying to go back, but you go deeper, until you eventually stumble across your bosses secret lair and he turns out to be satan (his last name spelled backwards - natas). You have to fight him with mad plastic explosives and whatnot. It's pretty fun. Once you kill him you get mad skril too!
^for serious? i could swear the day i stopped playing was i had all the udgrades and i jsut dug and dug and dug and iw as almost out of fuel and i died so i was liek fuck thata nd never played again